There's no 'correct' way to breastfeed - if your baby is feeding well and you're comfy then you're doing it right.

Anyway, sounds like he's going very well! So you're obviously doing a good job

So I'm thinking maybe you're a researcher and overthinker (Which has always been my problem). Sometimes it's good to try and switch off your thinking brain and just be with your baby, it allows your instincts to come to the fore. There is actually no book that can tell you what to do.