Hi there,
I am a mom of 6, soon to be 7, and we've had our share of sleep issues. I read everything I could get my hands on, and finally in my hour of desperation, my pediatrician recommended the book that saved my sanity: "Healthy Sleep Habits, Happy Child," by Dr. Marc Weissbluth. We have used it over and over with our other children, too. And since you are a stay at home mom, you have the advantage of being able to provide daytime consistency, which is the first key to getting nightime consistency. This book had some approaches that were opposite to what my common sense told me, but it worked like a charm, and it walks you through step by step. Do yourself a favor and get a copy. Good luck to you -- there's nothing worse than trying to function all day with the kids when you're not getting adequate sleep at night.