@tracy70: One more thing I wanted to mention: it would be super helpful if you had access to an indoor pool. At the 5 week mark I joined a small, local, senior fitness center with a pool, and the person in charge mapped out a knee rehab program to be done in the water. Basically targeting the same muscles, and same movements, but it is soooooo much less painful to do this in the pool. Of course, depending on where you live, you may not want to risk an indoor crowd. The pool I used is part of a retirement community, so there are strict protocols, very high standards regarding sanitizing, limits to the # of persons allowed in at any one time, and you have to disclose your vaccination status. Not a problem for me.........