u/Medical-Apple-811

hi, Im 22y, 72kg, 1 1/2 year on T and last year had top surgery and had a revision last week.

I was hoping to go back to the gym the 2nd week after the revision but my surgeon just told me I should wait for at least another 3 weeks to hit any upper body muscles. So I am only allowed to hit legs.

I am planning on hitting cardio and some legs for this 3 weeks until I can head back to upper body, since I wanna lose some weight, but Im worried about losing also muscle.

Has anyone gone though something similar? What would you recomend me to avoid the most muscle lose?