L.O.
I assuem you are pumping milk for day care... so I would have day care feed him his solid foods so you dont have to pump so much. I hated pumping and it is hard to keep up with the demand..
so have him eat cereal in the mid am at day care and a fruit or veggie in the mid afternoon at day care.
He can begin to have a bit of water with his solid meals. it is not too young to introduce the sippy cup.. he wont drink much from it but he can try. he doesnt need much water but just a sip to "wash down" his food.. really ther htm
I only gave my breast fed kids one meal a day of solid foods until they were 8 months old... just cereal and a fruit or veggie around dinner time. at about 9 months we went to 2 meals a day.
each time you add more solids they will want less milk. milk is the only source of nutrition for the first year. all the other foods are just practce for eating later.