9 Month old STILL waking every 2 hours

Our 9month old little boy is still waking up every 2 hours every night because he’s hungry, he’s been doing this since he’s been born! he has NEVER slept through the night, and isn’t able to self soothe. Any suggestions on what to do to help him? We typically give him between 20-35 min to try to self soothe, it never works. He has to be fed again to go back to sleep. We don’t know what to do anymore! Any suggestions would be GREATLY appreciated. TIA