Other resources:
Here is a video from a different channel suggesting other exercises to perform during weeks 1 and 2 following your knee replacement.
https://www.heartlandorthopedics.com/videos/post-operative-exercises-weeks-1-2-total-knee-replacement

Total Knee Replacement Exercise Guide
https://orthoinfo.aaos.org/en/recovery/total-knee-replacement-exercise-guide/