Yeah, I know toddlers are notoriously weird eaters and I was fine with dd skipping a meal here and there, but it's hard to stay relaxed about it when it's consistently more than one meal a day. She went through a phase about a month ago of pretty much refusing breakfast and lunch, and it really bothered me that she was basically going the whole day on nothing and only eating dinner. Plus it was annoying preparing all those meals that were barely glanced at! There was nothing I could do about it though, she just wasn't interested. But it's really true, they know what they need and won't starve. It didn't seem to affect her weight, sleep, energy, or anything else and one day it just picked up again.
A will be fine, it's much more of an issue for us than for them!