Man it’s like your in my mind, I do almost the same thing. Fasting is hard for me but I will try to do 2-3 days of 16 hour IF. Then I go back to my normal 13 hour protocol.
Explosive training always worked for me. The Gastrocs is mainly fast twitch fibers anyway. The soleus is mostly slower twitch so I hit that with high reps and super slow negatives.
Do you turn toes in and out to hit the different heads?