so you cycle 6 weeks, 6 weeks of or what 
please explain, test needs 6 weeks for full development in the body - muito obrigado
I am not saying that 6 weeks is ideal, far from that. Nor do i have any science to back that out.
My main goal is to still keep testicular function besides doing hormones once or twice a year. Using hormones is not a necessity for me, just an exercise of vanity or to better recover from injuries.
After 6 weeks on i notice that gains stall, in me. Going off will prevent testicular shutdown.
I want to avoid or postpone being on trt.
If one's goal is to solidify the gains, much longer time on will be better no doubt.
Regarding time off i would say less than 3 months would be pointless to come off, because even using pregnyl and dufine, testicular function takes take to normalize, if it ever will at 45yo.
Hope to be of some help.