How long after ptosis surgery can you do eye exercises?

Dear doctors, I am going to have ptosis repair surgery in two weeks, i have a mild ptosis on left eye and a latent ptosis in the right one. I have been doing facial exercises for a long time and they seem to work well for me. How long after the surgery can i go back to do the eye exercises from the program? Or doing them will make my eyelids drop again and weaken the repaired levator? Thanks and best regards