Water advice

My son is soo not interested in drinking water ! He’s bf but finally eating some solids. It’s so hot and He keeps getting constipated and his poop is so pastey to downright hard Pellets.

So far we hav Le tried the scent nipple shaped like a spout sippy cup, 360 first years (can’t figure it out ) and munching weighted straw (can’t figure it out)

I don’t want to keep feeding him prunes - then it’s like he has diarrhea. please tell me how you got your baby on water😦