Anyone having trouble with their LO holding still for diaper changes?

Shay
While I am very happy that my daughter is developing ahead of schedule, it's making it very hard to change her diaper. I have cerebral palsy so I do things at a slower speed than most. It doesn't take me that long to change a diaper, but too long for an active 7 month old. Any suggestions as to how I can have her stay still?