You may begin exercising the muscles of your foot right away by gently stretching them with the towel stretch. When the towel stretch becomes too easy, you may begin doing the standing calf stretch and plantar fascia stretch. Next, you can begin strengthening the muscles of your foot and lower leg by doing the rest of the exercises.
When you can stand comfortably on your injured foot, you can begin stretching the plantar fascia at the bottom of your foot.