Continuous sleepless nights

My baby is 8 months & HE HAS NOT SLEPT THRU THE NIGHT EVEN ONCE.

9 or 10pm- bedtime

Wakes 2-3x during the night to feed

6am- wakes up (his father comes from work)

7 or 8am- falls asleep

9 or 10am- wakes up

Takes at least 1 or 2 more naps during the day before bedtime.

How can I get him to sleep through the night??