Say for example your TRT dose is 150 you could just add another compound such as NPP or Tren and run them at 150 - 200 and make good gains You could also do Primo or EQ @ 600. Another option would be to add an oral for 6 weeks. Plenty of options for cycling all while leaving your TRT dose dialed in. You could add Proviron or Masteron to make things sweeter.
Not so cut and dried though, you've got to remember adding in any other androgen will affect whatever androgen panel you're already running.
Adding Tren for example - which I want to soonish - will cause estrogen and prolactin rise regardless on T, because even on Caber and maintaining my current AI, Tren is more androgenic so it will be getting to more Androgen Receptors more of the time, leaving more Free T to aromatise into E on the same dosage. So then it becomes a question of do I raise my AI or maintain it? Second problem with that being I can't test my e2 on cycle because the Tren will give false positives, so I have to go purely by feel in any case. And my e2 is already pretty high despite a lot of AI.
Same thing with Proviron and Masteron, my SHBG is already pretty low so they've been making me feel worse when I take them now. Hence why everything from tip to toe I want to make sure where it is now before I do anything will be my ideal baseline.
Definitely not gonna go crazy with the Tren though. 200-270 a week max. I ran 470 last year and I literally didn't recognise the body in the mirror. Crazy jacked by the day + the bacne to go along with it! So strong a little goes a long way.