Sleeping with wrist guards really does make a world of difference. And maybe there is some way to do the repetitive tasks in a more ergonomoc way? For example, I crocheted a couple of pieces for friends’ weddings in quick succession out of very tiny yarn, and it destroyed my wrists for several weeks after. Turns out, I’d been holding my crochet hook in a really stress-inducing way; I had just never had a reason to question my form until it started causing a repetitive stress injury. By just changing the way I held the hook, I started to see improvement almost immediately.