Need sleeo help!

I need help. My 14 week old still is not sleeping well at night. His sleep is very erratic. Some days he'll wake up twice a night. Some days he'll wake up 5 times a night. I've only had a couple good nights with good stretches of sleep. I've tried replacing feeding with just giving him the pacifier but it only gets me another hour of sleep if that. He will sleep pretty well when he goes to bed around 6 6:30 he'll wake up at 9 or 9:30 eat and then sleep until around 2 or 3. But sometimes he'll wake up at 12:30 2:30 4 and six. I know he needs to eat at least once in the middle of the night. But I need to get it down to only once. He's eating a good amount to have 5 or 6 oz every time he's waking up.

But I know that he can go longer without eating because he's done it before so I just don't know what to do he's almost 4 months old and he still waking up like a newborn sometimes. 😩.

How did you get your baby to wake up less often at night? I really need some help open to suggestions. I've also tried offering more food at feedings but he stops when he's full and he won't be anymore.