What Cutting Cycle After Battle with Cancer?

I just finished 6 treatments of chemo. Now starting radiation for 20-30 treatments. Wanting to get back what all I lost do to poor diet and cancer. What’s good cutting cycle to do after chemo?
I didn’t gain much. Just seems like traded muscle for fat. The prednisone and other meds but the belly fat on me badly. Just wanting to slim down.

Like cycling on the exercise bike?

Yes. Just my cardio is down. The cancer cause lots of scar tissue on my lungs. Makes breathing much harder with exertion.