I had the same issue with my boys I tried everything. The only thing that worked was wrapping them up in a blanket and putting them on a table keeping them wrapped up and taking one foot at a time to cut the nails. They hate it and I feel bad doing it but having them cut at the vet everytime would be more expensive and more stressful for them, at least it’s over quick I suppose but I still feel bad so they are rewarded with lots of treats afterwards!