Theres a powder made by vagisil, I find it helps! No other powders seem to work well for me, or have negative side effects. this one doesnt have any downsides for me and keeps things more manageable for me! I use the odor and ph balancing one.

I use gold bonds powder or lotion in every crease and it works wonderfully! I’ve also taken to wearing their medicated powder too. If only I could put it all over my body!!!

Babypowder helps dry it up a bit, sleep in nightgowns or naked, I don't know for sure but could try cool tech bedding and clothes. I see great reviews on zero sweat antiperspirant and lotion for whole body as well, haven't tried it yet but looks promising.

UPDATE: FYI
The Covid 19 postponed my laser hair removal schedule. I recently was able to resume for a second session and still have noticed a decrease in sweat.

I put antiperspirant under my breasts and on my inner upper thighs. Works very, very well.