Waking like clock work

My LO wakes up like clock work (twice) every night. Bedtime is 7pm. He wakes up at 12:30am and then 4:00am. He’s not guzzling milk at these times, I’d call it more of a snack. How do I get him to stop??! I feel like at this point his body is in a routine and he doesn’t really need food. (He gets about 25oz during the day). I’ve tried giving him a pacifier but it only helps for like 5 minutes. I need to sleep!

P.s. He’s been doing this since about 12 weeks. He just turned 16 weeks today.