Botox for hyperhydrosis?

I sweat a lot and have a condition called hyperhydrosis. Mostly my hands, feet and armpits are the culprits, and I’ve got a good deoderant that helps… but I’ve tried almost everything else for my hands and feet including electric shock therapy (ouch, I know), and I’ve heard that you can get botox injections in your glands to reduce sweating in the glands… but I’m nervous and skeptical… I just want to be able to hold someone’s hand without them being disgusted, or shake someone’s hand without them wiping it off after they’ve shook it, or walk around without leaving footprints of sweat wherever I go, or play sports without gloves and be able to hold onto the ball. I sweat regardless of my body temperature or stress/nervousness. It’s an actual medical condition and I’m 20, so I’m ready to get rid of it. Has anyone had this procedure or know of someone who has and has any advice??? Thanks much :)