5 months... still not sleeping!

Just wanted to see what kind of advice anyone had... my little boy has been a difficult one. He's gone through 7 formulas and 3 medicines due to reflux issues... we FINALLY have it worked out (I HOPE 🤞🏼) but he still doesn't sleep at night!!! And it's not like he's over sleeping during the day. He just started decent napping b/c he didn't nap with the reflux. At night he makes it about 3 hours and wakes up crying, eats, and right back to sleep, but he doesn't sleep as soundly. He will again sleep for maybe 3 hours and wake up crying to eat.. anyone have any advice?