Usually their milk intake will decrease after introducing solid. What you can do is either reduce or drag time. Eg 3 hourly milk feed but if given solid next feed will be 4 hour later. Pd did mention below 1yo baby main source of food is milk. I guess depend on individual parents too. To me milk is important regardless what age. Be it taking abit or alot as long as there's milk I'm fine.
I usually feed my baby milk before giving solids, then whatever she doesn’t finish, I use to make cereal or add to her food:)