Glad to see you back. I am no expert in recovery training, but I would follow bluesdawg's advice. He has made it successfully back (in my opinion, amazingly back) from a couple of pretty serious medical conditions.
I follow my doctors' advice and do all the riding I can without hurting myself. If it hurts, don't do it. If it doesn't hurt, do it. At least until I get well down the path to recovery.
I sure would not be in any hurry.