layering and hyperhidrosis/excessive sweating

I'm wondering if anyone has experience with excessive sweating/hyperhidrosis and layering? There's soooo many cute outfit hacks that require you to layer shirts at least a little bit and I just can't do it because I will sweat so much and be so sweaty. Same with jackets - unless it's minus degrees, I cannot wear them because I get too hot and sweat a lot. I'm wondering if anyone has any advice or experience in layering when you are So Very Sweaty? Thank you!

(and if you have any hacks for reducing/avoiding sweat stains in not-black shirts, that would also be great!)