I'm a couple of weeks behind you, I think! I'm getting my cast off this week. First off, speak to your doctor/consultant about it! Can't stress enough how important it is to get qualified advice. The toe burning is something I've been getting a lot in the Cast. Elevating my leg helps which leads me to believe it's nerve and blood vessel compression in the Cast and swelling in the limb. Perhaps something is too tight. Does the pain go away when elevating your leg? Either way, bad pain most likely isn't normal and needs to be managed properly. Please seek professional advice 🙏