New to the forum but not new to ankle breaks and sprains. Really don't remember how many times I've sprained my right ankle. I'm sure it's more than 5 times. I've broken it twice. Everything will heal eventually. It will weaken while in the cast. There's no way around it. Recently, I went through a series of PRP injections just to see if the soft tissues could be jump started into a healing mode. It worked wonders for me. That might be something to talk to your Doc about if you continue to have pain after the bones heal up.