My flock is 19 weeks old. Weeks ago we switched from chick grit to grower grit. My chickens don’t seem to like this bigger size grit (I can’t even imagine giving them the regular adult sized grit). I was mixing the chick grit with the grower grit. Since they have been getting all grower grit it seems most of it gets thrown out of their bowl. Should I switch back to chick grit even though it’s so tiny? Don’t they need bigger pieces of stone by now? Just not sure what to do.