Uhhhh.....?

So, my son is 8 months old and he's been doing great with solids for the past 2 or 2.5 months. However....he doesn't seem to be satisfied unless he gets boob, too. Doesn't matter if it's before or after. And he refuses to take bottles and his sippy cup. I've been giving him water in his sippy through the day to make sure he's getting plenty of fluids outside of just nursing. Is this normal?