Those of us who didn't change time last weekend are changing it this weekend (at 2 am Sunday morning). We're falling back into Standard Time (from Daylight Savings Time), so we get an extra hour.
That means your kids will wake up on Sunday at 6 am thinking it's 7.
1. Let them stay up later tonight and tomorrow to try to lessen the blow, OR
2. Do nothing now and then deal with it next week.
As always, remember that the worst days tend to be days 2 and 3 of the change, so Monday and Tuesday will probably be worse than Sunday.