I’ve been using oats. Everyone hates on gerber but they have an organic gmo free cereal that works. It’s literally just finely blended oats.
@Erin I love gerber!!
I got kendamil oatmeal https://www.target.com/p/kendamil-baby-cereal-creamy-oatmeal-8oz/-/A-88198408#lnk=sametab
Rice cereal can be high in arsenic There is also debate out there whether cereal should be the first food or not. I’ve heard it may not be best