Hi, I noticed you question jumped to the second page and I didn't want to see it go unanswered. I don't think ff will help your baby sleep any better through the night, they will sleep through the night when they are good and ready to. Also, as your lo is 6 months, you've probably hit a growth spurt. You should be able to offer (or substitute) a formula feed for a bf in the evening (my friend did mixed feeds for 8 months). If your lo doesn't like the formula I would perhaps try mixing expressed breast milk with formula for your lo to get used to the taste of it first, then slowly change the mix until it is formula. Hopefully someone else will be able to jump on with some other suggestions (I'm limited in advice here because my dd had a milk allergy so we couldn't touch formula).