Since you are on HRT, there is no reason to come off totally after or do a PCT. PCT is for recovering natural production but you do want to do lab work more often since you are always on test. I would stick to about 12-16 wks on, then dial it back to HRT levels and get some labs done to see what your levels went to. Then before you cyle again, check labs to make sure everything is in range. Honestly it would not hurt to do labs as you start to make sure taht hemo and hemat is all good