Petite LO, solids, BLW ?? Long, sorry

TJ1979

LO is 16 weeks tomorrow, and is barely over 11 lbs. We had poor weight gain in the beginning due to low supply and severe reflux. However, both of those issues are now resolved, and LO is starting to get chubby cheeks and chunky thighs. When pedi weighed her Friday, he said he wasn't concerned, but she was below the 15th percentile and could stand to be chunkier for her size. She is meeting all milestones and is a really happy baby, so I'm okay with her petite size. But pedi recommended adding rice cereal or oatmeal in a couple of weeks to help her bulk up. I thought rice cereal and oatmeal were low in calories and counterintuitive for bulking up an EBF baby? I had planned to do BLW, but I don't think pedi knew what that was, even though he said he agreed with it. Doesn't BLW usually skip cereals? Thanks in advance for any answers, advice, or encouragement!