I agree with EASYEJL. You can research it, but there's a scheme that drops weekly dosage to 100mg/week for 6 weeks to "normalize", and then it tapers from there. I think the taper is around 6 weeks long, something like 80,80,60,60,40,20...i dunno you get the idea...i would assume a longer taper would be warranted by a longer cycle. I think our bodies do not think in these "black and white" terms of exo vs endo test. If test is lower, we will produce test, period. The idea of being 100% supressed or 0% supressed is not valid I think. So yea, I think a slow careful taper could definitely help. Also, I should note that most of the people doing the taper begin to use a serm during the taper...like when they drop to 80mg/week they start with an AI (aromasin) and a SERM and continue these for several weeks after the taper is finished.
There are also people who argue you can achieve a similar effect of beginning to recover while using other AAS that are mild in low doses, such as primo, eq, anavar, masteron, even dbol. The key is using the right dosages (LOW). Obviously you won't "fully recover" while still taking exogenous hormones, but it would make no sense that using a very low dose wouldn't allow you to begin to recover your HPTA so that your real PCT when you're fully off would be easier. I know people that have had success doing this with 200mg/wk of primo, around 30-40mg/day of anavar (tapered from 40 down to 20), 200mg/week of EQ, or even 15mg/day dbol. All of these could be tapered like test as well i would presume.