B.F.
It's hard having a set schedule with small children in the house, but we try to stick to some schedulled things. Like- after they wake up, we have breakfast and then some snuggle time. Then we either go out or play in the playroom. Then naptime (they take early naps) wake up then lunch. Then we play or go out. Dinner is at 5. Bathtime is at 7, then snack and bedtime at 8. My suggestion is to pick a few things that are important to try to stick to (meal times, nap times etc.) and schedule those and let the rest of the pieces fall where they may ;)
(Edited to add- I second the Flylady suggestion! It absolutely makes life much easier and manageable! :)