Children and their circumstances are so different that it's kind of easy to find yourself in a situation where no one knows what to do. Like everything that matters experience is the only real teacher. Keep trying.

If you can talk to people from your parents' generation that had children. Everyone has a story or a skill to share that helps make it all make more sense.

If you can afford to hire professionals they are generally more helpful than books. Doctors obviously are good to consult. Post partum doulas have lots of random knowledge that they can diffuse to you while they help out around the house. If you are having feeding issues OTs and lactation consultants can be quite useful.

Making friends with new parents will allow you to learn together.

Penny Simkin's book "The Birth Partner" is mostly about birth but had helpful ideas on sleep rotations and early feeding.

Random but I found this less wrong thread helpful for working through antivax ideas in good faith: https://www.lesswrong.com/posts/oFXXfP88nJrseeoMD/the-litera.... Particularly Lao Mein's comment. It is a very difficult topic to deal with head on since biology is so complicated and the surrounding discourse is all poison.