As for boy#1 I have a 1 yr old dcg that did the same thing. The only child at home being held all day, center of the universe. I caught on right away that she was used to eating on mom's lap from mom's plate b/c she was crying at my lap when I tried to eat any meal. Not going to work! She also cried behind me all day. I did the same thing you are doing, reassured her etc. After about 4 weeks she finally stopped, although at week 6 she still does it sometimes. Just keep doing what you are doing. He will get it eventually.
