I have no advice, but I understand. The lack of sleep is the worst thing. Valentine also had to be fed several times per night and was eating only 5-10 min before falling asleep. But she never had colic. I tried the bottle later, at ~4 months old I think, but she never accepted it.

Vince is so cute! And I love the picture of Quinn nursing her baby doll!
I never realized you have a cat! Lovely picture too!