I have 4 6wk old babies. Ive been using the small round feeder with mason jar but they have started knocking it over & wasting the food. I think they may b doing it when they jump on top of it cause they are getting heavier. I was wondering anyone had some other ideas as to a feeder. I didnt want to use a big round one tht they can get in & poop in. Thanks for your ideas.