Mine's been at least 6 years, but the one thing I've learned and share is to make SURE your surgeon is clear on the following:
You want to know where the line is and all the indicators where you might do damage as you push to your goal.
They (medicos) worry about people's pain. I told him that he is to let me worry about pain and he's to make sure I know where the line will be between "pain and damage".
Mine got it. He made it crystal clear.
I dind't need any specialequipment. I went for flexibility and then strength. I just did what the PT's told me to do and how much... Once the doc said "you can't hurt what I did to fix you, but it will hurt YOU if you do too much"...then the party was ON!
I got cut August 27th and was shooting my hunting weight bow by first week in November.
Your mileage may differ. Damage extent, type and required repair all affect the healing time before full rehab.
So many folks I've met with shoulder surgery either didn't push, or pushed too soon and ended up with return bouts of work done and serious delays, not to mention the ordeal over again.
FWIW...
Keep the Son in your eyes and prayers for a good operation and quick healing!