Routine help

I just posted about my baby not sleeping well and I’ve been reading about nap routines, how the heck can I get it started I really struggle with giving him a bottle at certain times and what not because I’ve been feeding him when he’s hungry and putting him to sleep when he looks tired and we go out a lot through the day so his naps are always stuffed up he does sleep really well in the car and pram but when we’re home he’ll be up for ages 🤦🏼‍♀️ I need some serious help I just want a routine I’m starting to go insane