Moon boot adjusted

Ok so now I am exactly 8 weeks post surgery. I have been wearing a boot for over a week and decided to get it adjusted so that my foot would be a little flatter. The stretches recommended by the physio has obviously done the trick because they adjusted my boot to 90 degrees.  I got a shock when I got up though. Suddenly I felt like I did 10 days ago when the boot was first fitted. Felt like I had very little strength in my foot (which is true) and it is definitely pulling.  After an hour or so I've been able to do a bit more, but I do feel vulnerable again. Still other than my physio appointment next week I don't need to go back until after Christmas now.