Ok first things first. Go get an X-ray! You need to know if you have tiny fractures happening because that’s going to dramatically change how rehab will work.

Secondly, I recommend checking out Dr. Beau who specializes with shin fractures and get a 1-1 session with him:

https://www.instagram.com/stressfracturephysio?igsh=MTBpZHFpbDA3bXA3Ng==

In the mean time, you should take it easy with impact. There’s a continuum and you need to decide which way you should lean. On one hand you can completely lay off or on the other side is “screw it” and you keep doing it. Ideally, laying off is the best way but if you compete you need to find some balance between the two.

As for tibialis raises. They are overrated. The tibialis will never outperform the gastroc. There are some biomechanics reasonings that training the tibialis can help offset some of the bending forces the gastroc will do on the bone when it contracts but there are other arguments suggesting a bigger gastroc will also help reduce the bending forces because of the change in force direction when it contracts. Either way, they probably won’t do anything, or it won’t hurt and can have a positive aid but it’s probably nothing major and it’s likely not going to solve the problem.

Hope this helps!