It's not about how often you change the diaper, but how timely you change it. But remembering to change the diaper is a good start.

Every kid is different and requires different strategies/ways. You just figure it out along the way, in hopes that you don't go insane during the process.

I do think the best advice is to not forget about your better half just because you got a kid. The kid will just leave you after he/she grows up, but your better half is the one that you will spend the rest of your life with. Also, having the both of you working together trying to figure the kid out is better than doing it solo.