When I found Oliver I had a hard time keeping his formula warm while he was eating and then he would refuse to eat anymore. I looked online and couldn’t find anything that said what to do. I wanted to share what finally worked so maybe people won’t have a hard time like I did. I make his formula for 24 hours so I make it and put it in a small mason jar and refrigerate it so it’s really cold to start with. I fill a Yeti cup up with hot water and I got some of those small plastic take away containers. I put his milk in the container and place it where the bottom is in the water and put a wash cloth over it for about 10 minuets. It heats it up perfect. And maybe everybody knows how to do this and I was the only one having a hard time but maybe this will help somebody. This is Oliver loving his food!!!