Feeling like I’ve failed at raising my baby

I’ve learnt so much since having my son and now that I know so much I feel like I’ve failed. If I had known this stuff at the start maybe he wouldn’t be so difficult to deal with.

I wish I knew about putting babies down when they start to get sleepy, co sleeping, their cues and so many other things. I feel like I’ve made him so reliant on feeding to sleep even though he’s only five months old. He’s gone from sleeping 7 hours straight to waking every 1-2 hours of a night and I’m so exhausted.

If anyone can give me some advice I’d really appreciate.