Sending lots more prayers and good healing thoughts to Monty, and all of you.
Rickiesmom has great suggestions. I went through a similar surgery with Scarlett. I put my mattress on the floor. I put her mattress on the floor. I took my two weeks vacation so that I could stay home with her. The one time I had to leave the house, I paid my upstairs neighbor's daughter to dogsit her. I was able to use heat on her but she didn't have a drain so I would check with your vet.
Make sure you make a little time for yourself every day because this is emotionally draining.
Monty, heal well for your mom and just do even more napping than usual. No jumpies.