Have you checked your body temperature? I think that is the most important parameter, excessive sweating is often correlated with that but not always.
I know hyperthermia dramatically increases the potential for neurotoxicity.
Although meth-induced hyperthermia seems to be less dangerous than MDMA hyperthermia, the latter can kill you pretty quickly from what I've read. But hyperthermia is never good, it's best to stay in a cool environment if you can.
You can also cool your head with ice-packs or stuff like that.
However, the most most dangerous sign is actually when you stop sweating, but your body temperature remains elevated. No more cooling = bad news.
Isn't it summer on your side of the world? Maybe the higher temperatures are also making you sweat more?
Meth makes me sweat more for sure, but most of the time is similar to normal sweating (like mostly on the armpits), it's not the kind of thing where I'm dreached in sweat.
But I actually experienced just that a few months ago when it was way too hot here (~35-38°C), for some reason I felt like I couldn't tolerate the heat this time around and was sweating buckets for like a week. I wasn't doing meth at that time though, I had some amphetamine sulfate stashed but didn't take any precisely because I felt like it would make me overheat even more.
Edit: Forgot to mention that paracetamol can decrease your body temperature (usually). Not sure if that would solve your issue though.