This is a method that I tried not because of the curling issue I was having, but more because my laundry tabs weren’t working so well. It also straightened out my curling tabs and I haven’t had an issue since
This can be applied to any diaper w/ velcro tabs. I think the added structure is what helps this work. It has worked for me and I hope it works for you too.
Good luck and I hope this helps fix your curling tabs too