Typically, a court order like a child custody order can be modified once
a year in Texas. This time limit is in place to help ensure that all modification
requests are realistic and based on actual needs for changes, not whims.
Although, the court can always be asked to make a special exception when
the need for one exists, especially if doing so would reflect the best
interests of your child. You should rely on an attorney whenever you request
a modification, though, so it is made correctly.