@ihavetwins , I'm going to jump in here as well and ask you to re-read this article:
Activity progression for TKRs
That will give you some idea of what you should aim to be doing now.
This is a year-long recovery, a marathon, not a sprint, and your new knee is only just over 5 weeks into that 52 weeks. It's still a baby, so treat it gently.
I only did a bare minimum of PT exercises after my knee replacements and both my knees are strong, flexible and reliable.
My surgeon doesn't allow any formal PT at all for the first month after a knee replacement. He says your knee needs that time, to start on its journey of healing. For that month, we rest, ice and elevate our leg, and walk around the house. The walking is our exercise and we increase it a little each week.
After that month, we just go to PT once every 2 weeks, where we are shown a few new exercises to do at home each day. I did some when I remembered, which wasn't very often.
His patients all do well and achieve good ROM, as I did, and he hasn't had to do a manipulation to help with ROM for the past 4 years. I think that speaks for itself.
If you decide you want to stop going to PT, these are the only exercises you need to do - and these not to excess;
Heel slides and how to do them properly
Extension: how to estimate it and ways to improve it