My husband and I had our daughter on a decent schedule for when we had to put her down for bed. She…

My husband and I had our daughter on a decent schedule for when we had to put her down for bed. She was sleeping through the night and woke up once if it wasn't a good night. Well the past two days we messed with it:[ Monday night she didn't go to bed until about 10:30-45ish. And last night she was up until 4AM. Will it be a struggle the next couple days????