Relief for calf tightness?

Hello fello ATRs
I am 9 1/2 months since start of non-op ATR treatment and I have been in two shoes for ~7 months (similar to UWO protocol).  I would really appreciate some feedback on how to relieve the tightness in my calf.  Perhaps there is a diet or vitamin(s) that can help?

one leg heel lift max is [...]