My baby is 4.5 months old. He sleeps in his crib until his first nighttime wakeup, then in bed with me. He goes to bed around 8pm and wakes up around 9-10am. He wakes up about 3-5 times during the night, all between 3am and when he gets up in the morning. When he wakes up, I nurse to calm him down and get him back to sleep. He usually doesn't actually wake up, just fusses in his sleep.
My partner helps with this by brining baby into bed after his first wake up, then going to sleep downstairs for the rest of the night

That is at MY request - he would help more at night but he snores and that keeps me awake, so I would rather him sleep downstairs once babe starts waking up more frequently. That helps me get more sleep!