You cannot force your knee to bend. No PT, no exercise, not even a magic wand will make it bend.
What you CAN do is not do anything to limit the bend. The only thing limiting your bend now is swelling and tissue trauma. So if you have committed yourself 100% to the Bonesmart mantra, your ROM will increase as your swelling goes down and your tissues heal. PT does zero for healing, by the way. Zero. Rest = healing. Time = healing.
I found NSAIDs did reduce the swelling. And let me tell you something else. A post TKR knee feels really really weird. It hurts, it's big, it's clumsy, etc., etc., etc. You can not draw any conclusions from those weird feelings. Everything you're experiencing now is temporary, and you have to keep telling yourself that. It can be quite trying for some people. I know it was for me.
Watch out for this scenario: your knee is slow to bend, your ortho and/or PT pressure you to bend and even say you'll get a MUA if it doesn't bend __ degrees by [date], and then you in turn push your knee. This will, I guarantee you, backfire.
I too had a sense of panic over my bend early on. And guess what? My panic was actually justified. But it didn't do any good.
I'm glad you changed the name of your thread.