You are not a failure. Babies routine changes all the time One minute they are a great sleeper the next month they aren't (such is Mackenzie Rose xx). the best advice my mum gave me was if you're tired, they won't sleep, pop them into bed with you, there is nothing wrong with that. they are babies for such a short time it won't be forever. Mackenzie is 15 months old and has stints where she will sleep thru and other nights where she wakes numerous and we just can't settle her. Hannah is only a few months old and her sleep pattens will change-. Some babies are overtired and then can't sleep. If she did sleep more during the day she may be a better sleeper at night, I don't really know just repeating things I have heard/read. Friends of mine went to sleep school as their sons was a terrible sleeper - they ended up going 3 times and have finally got him sleeping thru and he is nearly 2 years old. They are extremly stricked with his routine so I guess it depends on how far you want to go. Another friend has a 3.5 year old who is just starting to sleep thru and they never went to sleep school, they just battled thru it. It depends on the individual, I know from other mums the wait is often a long one to get into sleep school so if you make an booking and all is going well don't cancel it until the last minute as often the little darlings will revert back just after you give up your spot! (Murphy's Law). Some places offer a day sleep school where you just go for the day and they show you techniques for settling which are often quicker to get into. Do you swadle Hannah? Is she hot or cold? Is she refluxy? (for a want of a better word) as reflux often is worse when they are lying down and maybe she stops crying when you pick her up as it feels better? Have you tried just sitting in the room to soother her and let her try and drift back to sleep? I don't have the answers but understand how you feel. Do what ever you need to do to get thru each day and night. There is no right or wrong here. Contact your MCH nurse as they will also have papers/videos on how to try and settle. Babies often get themselves into a routine despite our best efforts and just as you are getting to know them they change it! You are a great mum and you will get your sleep back - just hang in there. Everything looks 10 times worse when you don't get any sleep. Good luck