C.
Does he consistently drink all 5 oz. every bottle? If so, I would go ahead and increase it a bit. Many 5 month old can drink 6-7 oz formula bottles by that time, so I'd give it a try. It's a little tricky because you don't want to waste pumped milk, but you want him to get his fill. Solids/cereal will not help him sleep longer at night. Though breast milk is digested faster, it doesn't mean they are hungry more often. By the time we started solids at 6 months, my first son was down to eating 4 full meals a day and he was breastfed. I couldn't feed him more often if I tried. I think my second son was at 5 meals a day when we started solids at 6 months. It's more a matter of how they've learned to sleep than factors like solids and digesting too fast. May work to add an ounce to help him sleep through...who knows how much he eats when he's with you so maybe he can handle more than 5 ounces at a time now. I'd say it's worth a shot to increase bottles a little so you give him the opportunity to drink more without wasting what you've pumped. Best wishes to you!