Hi Kathy,
So sorry to hear you are feeling down and having trouble. As others have said, I would opt for closer pt simply because the ride alone will be challenging. In the meantime, start with the basics for exercise, keep it simple. Do them a few times throughout the day, but don't obsess.
Something I started doing was after I ice in the morning for an hour or so, I put on my compression stocking. I modified mine by cutting out the foot so the bottom is right above my ankle and it extends to mid thigh. I wear it for at least half the day. When I wasn't working, I would wear it all day sometimes. It can help move the fluid away from the joint. You should try it. Now I can say that I hated the compression stockings right after the TKR last year, but this time around can see the benefits of its use.
The other thing I would suggest if possible is getting on a stationary bike. Someone a while ago explained that the action of peddling, acts like a pump. It will help move the fluid away from the joint, and into the lymph system to be flushed out. You might also see if a massage therapist is nearby. They could do some lymphatic massage. This starts with massage from foot to thigh/groin, always with a stroke the moves up the leg towards the groin. Again, this will help with swelling. My pt did this and showed me how to do it myself at home. All these things in combination helped a lot to get my swelling down to almost none at this point. The measurements she took showed a 6-7 cm drop in circumference of my knee, a huge improvement over 3 weeks.
Please keep in mind that you have much time to gain rom. You will need to try different things to see what works for your body. No two recoveries are alike, so much trial and error along the way. Just don't lose faith, better days are ahead. In the meantime, come here and post away. You know that we all understand where you're at and are behind you 100%!
On another note, did you see your fellow countryman Andy Murray won the US Open Tennis tournament last night? It was great, he played so well and was quite an inspriration!
Do take care and please keep us posted. Prayers and hugs are on the way!
Be well my friend,
Dawn