Step one is just being there, and not putting everything on mom. Change those diapers. Sing the lullabies. Give the baths. Play peekaboo. Be dad.
Step two is to not be concerned if you don’t feel an immediate connection to the baby. Sometimes that takes time. In the beginning, they are just a potato that cries, poops, and keeps you up at night.
Step three is to be kind to yourself and your partner. Raising a kid can be mentally and physically draining at times. Give your partner some alone time, and take some alone time for yourself if at all possible.
Step four is to keep coming to us for help or even just to vent.
It may take some trial and error to see what works, because every kid is different. What worked for my first kid didn’t really work for my second. But you’ll get there!