I'm just about at my wits' end with DS2 and his non-napping crap sleep. Took him for his 12wk jags today and burst into tears when the nurse asked how things were going 
She said one of her children was like this and when she started mixed-feeding he got better....is introducing formula likely to help, at all?
I know it's not a popular thing, ebf is best, blah blah blah but honestly, I'll try anything