If you have a good PT she'll tell you to keep doing them. After a while you likely won't need to do them daily. I still stretch every single day regardless of exercising, and do exercises similar to what you have listed, and ankle ones, a minimum of two times a week. It works!
What ankle ones do you do? I've been thinking about adding some ankle flexibility/strengthening.
I do resisted ankle inversions/eversions/dorsiflexions, single leg balance exercises, and have found a way of stretching our muscles/tendons down around my ankle/achilles. The last 4 exercises on this link! https://myhealth.alberta.ca/Health/aftercareinformation/pages/conditions.aspx?hwid=ad1464
Thanks! I haven't tried balancing on a pillow, and it looks like it'll be really good. My ankles don't hurt but they often feel stiff in the morning.