Hi Reno,
Happy to share my experiences. Part of if may be age: as I am currently in my 40s, probably not quite as much sexual energy builds up in 2 weeks as it did in my 20s, much less my teens, when I had not yet learned anything about yoga (although I also remember going for 2 weeks once as a teen while busy on a foreign trip, leaving little time or privacy for sexual thoughts). That said, I think it is primarily a matter of habit, as I recall being able to build up to 2-3 weeks at one point around my late-20s-early-30s.
I recall that, before I started AYP, I would typically have an orgasm 2 or 3 times a week while looking at pornography and/or with a girlfriend, when I had one. I had practiced a bit of qigong prior to AYP, but the teacher did not really discuss sexuality. Once I read AYP and began to attempt brahmacharya, I recall a period where it was very difficult to get past one week. This was back in my early 20s, I think. I recall that, like clockwork, I would get to 1 week and then find myself unable to sleep, tossing and turning due to sexual urges.
At the time, I think I managed to get past it simply by “powering through” (accepting sleep deprivation). Once I managed to get past that mental “barrier” so to speak, I found that it no longer became difficult and that, if anything, I slept better, although typically for somewhat shorter periods with fewer dreams (subjectively seems like a shorter period of deeper sleep as compared with sleep after a recent-ish orgasm; it can also start to feel like light-yet-refreshing sleep, which may be the early stages of “witnessing” sleep Yogani has referred to). By gradually pushing the comfortable boundary, I found I was able to get to 2-3 weeks, though around 3 weeks I tended to feel irritable. I have somewhat fallen back from that level in recent years, like I mentioned, tending to end up around 2 weeks, though sometimes managing to go a bit longer.
In regards to your question about tantric sex, there is an extent to which it is just an understanding I have with my wife. When I met my wife, I was already practicing AYP and some degree of brahmacharya, so when our relationship became sexual, I simply told her that I preferred not to have an orgasm every time. She found this a bit unusual at first, but largely did not mind and even seemed to enjoy it better in some ways, because it allows for more prolonged sex–e.g., having sex for a little while, taking a short break, and then beginning again. I do not necessarily take it super slow or anything like that, though occasionally I might pull out or intentionally slow down a bit/ask her to slow down if I feel like I am losing control when I don’t want to.
That is, I did not change the way I had sex a great deal when I shifted to favoring pre-orgasmic sex; I mostly just had sex as I usually would but slowing down or stopping if I felt I was coming too close to the edge. Perhaps a degree of tantric masturbation “practice” (the counting method Yogani describes) may have been involved. That sort of practice I mostly only do if I am planning to have an orgasm that day because a high level of stimulation like that increases the probability I will find it difficult to maintain brahmacharya. Related to that, I also generally only look at porn if I am intending to have an orgasm that day. A milder level of manual stimulation I may do on days when I have had an orgasm relatively recently because there is then less risk of getting overstimulated, but not while looking at porn. The combination of manual stimulation and porn I think leads very easily to the point where one would feel uncomfortable maintaining brahmacharya.
Overall, if the goal is to increase the length of time between orgasms, which I think you’ve seen the value of, the best way I’ve found besides just making a conscious effort not to look at porn or engage in sexual stimulation, is to just keep very busy. Like the example of myself going on a high school trip where I was almost constantly occupied and rarely alone, such circumstances make not thinking about sex easier. Increasing the level of exercise you do as the time since last orgasm increases can also help, as it seems to “burn off” some energy.
When I do have orgasms, if by myself, I almost always block them using the finger technique Yogani describes but have given up trying to do so on those occasions when I do have an orgasm during sex. I used to try to do that during sex as well, but always found it rather awkward, both in terms of being a lot to try to think about while having sex with a partner and because it seems to work better mechanically for me when the hand is coming around the front, rather than the back.
Interestingly, I find tantric sex slightly less of an obstacle to brahmacharya maintenance than porn and masturbation. Something perhaps not everyone is aware of: masturbation is typically a stronger level of physical stimulation than e.g., oral or vaginal sex. Sex is usually more enjoyable primarily because of the mental aspect–the greater richness of sensation, the eroticism of being with a partner, etc.
I think this fact might also relate to the gradual development of natural vajroli, “inner lovemaking,” outpouring divine love, etc. Physical stimulation of the genitals is pleasurable and stimulates the energy, but it also tends to increase the desire for genital orgasm, perhaps by concentrating energy, blood, etc. in the area. Lovemaking with a partner, by contrast, may still involve a fair amount of physical stimulation of the genitals, but tends to be a more full-body experience, and also more of a mental experience, with the pleasure deriving from the connection with the other person, the eroticism of the thoughts, etc.
Eventually, we start to feel this energy more evenly throughout the body and start to feel a kind of ecstatic love for things without any sexual stimulation, nor much, if any erotic tinge. We may feel something like an “orgasm” in the heart area, for example, but it does not increase the desire for genital orgasm; in fact, it may even lessen it somewhat because there is a sense of the ecstatic energy moving throughout the body rather than building up in the genitals. This, in turn, seems to sometimes manifest in a feeling of loving things without cause or, in my experience something like “loving things just for being what they are.” I do not feel this all the time, but have found it something I experience from time to time, and increasingly as I continue AYP.