I agree with silverlining. I do not think you can do any more.
When I had my last knee operated, a neighbour offered to sort out my bins and being a typical man, he did it once!
I hope the loo is not far from your bedroom in case you need a trip during the night. Hospitals only give one raised loo seat which is not a lot of help if like me you have one loo up and down.
Before surgery, practise putting items into your washing machine by putting the about to be operated leg backwards and straight when putting items in, and maybe practise with your picker upper to find the safest method for popping in and retrieving. I put items in a carrier bag and I managed using crutches.
You will be fine, good luck. We are here as always.