jw88, I think it depends on what your goal here is. If your primary goal is to maintain those weekly testosterone spikes, and not return to "normal" mode, then I'd say stick with your 10 day plan for a while and see how it goes.
If, however, your plan is to be free from PMO, or at least be free from P and not let MO be such a habit, then it may be best, as other guys have suggested here, to at least work up to a "hard mode" total break from PMO for a while. But I know that that's really tough, and personally, your 10 day plan may be a great way to start. I know that for myself, if I set too lofty a goal to start out with, I am unlikely to reach it--the goal will seem too far off and too impossible on those days when I am super horny.
But if your goal is to BE super horny, ha, then you need to find the rhythm of your own body with that. You are not a machine, there is no factory standardization, just averages and typical day ranges. 7 days is the spike for a lot of guys. But some will peak at 5, some will take longer. You will have to just be self-aware enough to find your own T spike. And that may even vary some, week to week, based on how you are feeling emotionally, how much exercise and rest you are getting, how stressed you are, etc. Again, we're not machines, ha.
But if your goal is more of an abstaining one, then I like slip_kid's plan, and agree with his thought that:
I've opted for not-so-hard-mode (NSHM) on the basis that if I don't allow myself a quick release after a week or so of no fapping (and no sex), the pressure build up starts to become acutely uncomfortable, both physically and psychologically. And it's under those conditions that I fear relapsing into a PMO binge.
This might be because I lack willpower, but my big priority here is to permanently wean myself off porn, not to quit MO. It might sound perverse, but I'm convinced that a quick five-fingered shuffle once a week is actually helping me to stay on track.
SK
But I also agree with Discipline, that perhaps that weekly, functional release might be the best plan to adopt aI]after[/I] you have been PMO free for a while, to give your brain a chance to "re-wire" its patterns more. Otherwise, it may be too easy to just revert into old habits if you have a slip up.
But, even on your 10 Day plan, it may be that, like chris33 has experienced, that say you get to Day 10 and you really aren't that horny, so you decide to go hold off for another 2 days or so, and then reevaluate. That has worked for me in the past, where my plan was to abstain for a week, but I kept on extending it and ended up going for two or so. You just have to stick to your new commitment, for however long you decide to abstain again for. That way, you are strengthening your willpower, as well.
So, it all depends on your goal I think. To maintain that horny spike rhythm, just "listen" to your body and experiment to see what MB frequency interval seems to maintain that the best. (And remember that just because your T-level spikes one day, doesn't mean that it's completely gone after that, it will be high for a while as it tapers off. Though, then again, it's a hormone we are talking about, so that spike is kind of like a big picture average really, bec it DOES spike up and down day to day, even hour to hour, as I think we've all noticed here!) But if your goal is to avoid PMO for a while, then know that returning to that "normal" feeling again is actually a blessing, because it is easier to resist PMO when you aren't popping boners every 25 minutes, lol.