Sleep can make you question everything. Before anything else: you are not bad at this, your baby is not broken, and there isn’t one right way to do nights. Some babies need more help, more closeness, or more time. Some sleep in long stretches early, some don’t. That’s not a failure, it’s just temperament and it’s all random. If nights feel long or unpredictable, that doesn’t mean you’ve failed or you aren’t disciplined enough or there is a magic formula you are missing, it means you have a baby in your house. This page isn’t expert advice, just a collection of resources and ideas that I personally found grounding at 3 AM when it felt extra hard. Take what’s helpful and leave the rest.
Wonder Weeks App
Sleep Training Truths: What science can (and can't) tell us about crying it out
From Safe Sleep to Healthy Sleep: A Systemic Perspective on Sleep In the First Year
Little Ones sleep program (app): costs money, but I felt like it gave me some skills I didn't have otherwise. There are probably many similar programs.
Note: Sometimes it was just nice to have a sense of structure and some decision criteria because you are so tired. But, be prepared to just do what works for you and leave the rest. It’s ok to stop using a tool when it is no longer helpful.
Happiest Baby on the Block (YouTube)
Note: Always put them to sleep on their backs, practice tummy time during the day in short bursts working up to longer sessions. Having them just on your chest while you are inclined back and then on your own tummy or on your forearm also counts, especially at first.