I am a couple years out from having an actual fight gym membership, so I improvised something of my own.
First off, I am not a slave to Mon-Wed-Fri type of thing, I train when I reasonably can which ever way I can. Work might get busy, I might be out late entertaining myself, I might be just tired, I am 49 these days.
I have it down to longer, higher priority workouts, and lighter ones.
the higher priority ones are structured like this:
3 3 minute rounds, 1 minute between, shadowboxing. the first just shuffling around, trying to work in some head movement.
3 rounds on the heavy bag. Mostly lately I will do the first round balls out:
jab-kick
jab-straight-switch step kick
jab-straight-jab-kick
jab-straight-jab-straight-switch step kick
2 rounds free style, essentially like I am in a fight.
3 sets of body weight chinups
3 sets of medicine ball rebounds, 2 minutes on, 30 seconds off.
and then I am done. this usually runs me 47 minutes, afterwhich I figure I have had enough.
a low priority day might be:
rope skip 3 minutes - 10 pushups - 10 situps - 10 bodyweight squats X 2 or 3 if I can.
maybe some shadowboxing after.
Other days I might do some double end ball work.
the idea is to try to do the priority stuff at least twice a week, or preferably 3.
Supplementation.
I generally workout first thing in the day, my front room. I will have as part of breakfast/pre workout some whey protein, the stuff I have now is fortified with BCAAs and glutamine. An hour after I finish breakfast I take a preworkout formula, most products I use have some amount of Beta alanine.
I just recently got a sampler pack of a BCAA intra workout product that had me feeling like I could rip the horns off of a bison, and bought a supply. this had me ending Sunday’s workout with 3 rounds of using my 100lb bag as a grappling dummy. Slam it, jump on it and strike it, slam it again etc.
this arrangement I think keeps me fit and I use combinations that I remember having learned while in the fight gym. It also lets me fit in other aspects of life without being too pent up about, oh-my-god-it’s-Monday-I-need-to-do-this-that-or-whatever.