Gordy – The formation of scar tissue can be a problem, and like everything else in surgery, it is very individual. As is when it is time to push limits and when to listen to your body. Perhaps it is time for a talk with your surgeon about your concerns?
You mentioned lack of specialized equipment at home – your PT can work with you on using common items in your home to substitute. After one knee repair surgery, I was taught to use a webbing strap around my ankle to gently pull my knee into a deeper bend. All I remember of the exercise after 25 years it how much it hurt – but it worked. (Just one of many tricks learned over the years.)
Also Chris (@artscaping) has talked a lot here about MFR (myofascial release) therapy, which keeps the fascia loose. I believe that process, with massage will help as far as preventing scar tissue formation. Also, lymphatic drainage massage, which can be done by you at home, can help move the fluid to reduce swelling. A good PT or massage therapist can show you how to use it in your specific case.
Those are my thoughts for the day – anything give you ideas?
Hang in there – this is a road race, not a sprint.