Thanks for that,

I would continue with gastrocs and soleus strtches not pushing into pain just a stretch. 3x 30 sec each.

I would also do eccentric gastrocs and soleus strengthening as long as it it comfortable.
This involves standing on a step with heel of the edge then push up just on good leg. Then with put toes of bad leg on step and lower down just on the bad leg slowly till your heel is below your toes and you have a bit of a stretch in your calf.
Repeat with knees bent as long as you don't get sharp pain.
build up to 3 sets of 15 with knee straight and 3 x 15 with knee bent.
Perform only if comfortable. Up with good lower with bad.

try it out and let me know how it feels.