Depending on what the original order states about time spent with each parent, I’m not sure you would have to file for this. If you have joint custody could you and the ex not just discuss it and work something out between you as far as the time spent with each parent? My husband and his ex have joint custody with equal time for their children. The schedule was previously that we had them on Mondays, Thursdays and every other weekend and his ex had them Tuesdays, Wednesday, and the alternating weekend. They have arranged and agreed to have the children from Monday to Sunday now to make things easier on the children. Switching households midweek is difficult and confusing.
I want to motion the court for a Parenting time modification for more time.