If I were to assume without any additional info that training/utilizing anabolics 3 months after this surgery is not going to be invasive or contraindicative to your health:
You should probably just wait until your CNS has 're-learned' all the movements and you cap out on the CNS re-adaptation. I have a feeling this will take anywhere from 3-4 weeks. IMO, 1 month maximum you should be good to go(could be a little earlier?).