I'm a first time father to a 6 month old now. My biggest lesson is humility. Don't ever criticise some other parent's practices. This is hardcore survival mode, so do whatever works to keep the baby alive and your mental sanity.

Sleep deprivation was a big issue for us, and we solved it cosleeping with him in the same bed (criticised by other parents and older generations ), but it works for us cause we don't have to standup and fully wake up to soothe him and feed him. First few months we used a cosleeping bed and now just sleep together (he is in the middle between us).

Another tio is to try different stuff multiple times and different ages. Some useful things were white noise, pacifier, singing, dancing.

Good luck, and welcome to the brotherhood. I'll smile at you with a deep understanding face whenever I cross you in the daily walks with your newborn.