I've a 12wk old daughter who had been sleeping through to 5-6am but has started wakening wanting fed at 3am, not sure if its just a grwowth spurt but been going on over a week. I currently give her a bottle of breast milk at 11pm but wonder about changing this to formula to see if it'll fill her up more?! Anyone have any advice on which formula to go for? Friends seem split on SMA/aptamil...