J.S.
I had mine over 5 years ago and I didnt have any kids at the time. But it took me just over a full week to be able to lift my arms above my head without any pain. I would treat it like a c-section. When the 2 year old gets back only lift him when necessary, like into the carseat, crib, highchair, etc. Otherwise let him come to you until you are ready. If you take it very easy the first week you will be able to do more as time goes by. Good luck! It will be worth it.