My method may not be best for you, however, has well served this 61 yr old.
For 7 months, I typically shoot approximately 40#s.
For spring turkey season and deer season, I jump to 50 to 52#s.
When first transitioning to 50 to 52#s, I start building up and getting acclimated approximately three weeks in advance. I shoot just enough arrows until my form starts to deteriorate. It may be less than a half a dozen arrows. I don’t shoot one more arrow at the higher poundage but immediately go back to run approximately 60 arrows thru the lower poundage bow.
I repeat the process daily and sometimes twice a day until I gradually build up to being able to properly execute shots on at least a couple of dozen arrows at the higher poundage. Note: I decrease the number of shots at the lower poundage as the number of shots at the higher poundage significantly increase.
I am ready to switch the shooting session completely over to the higher poundage within a week. I feel reasonably acclimated by the end of the 2nd week and the shot feels quite comfortable well before the end of the 3rd week.
Note: Properly managing length between shots and number of consecutive arrows shot may go far in expediting full acclimation. Also, I do actively strength train.
May you achieve your goal…