Mama, more food please

Megan is continuing to struggle with throwing food during snacks and lunch especially.  She is not getting to finish her snack at school because she won't stop throwing (she makes up for it in the car on the way home). Most days she isn't eating more than 1/2 of her lunch because of throwing and then continues the behavior with her afternoon snack.  

I have stopped using the picture cards so that I can get this behavior back under control this week.  Yesterday Megan ate just shy of 1/2 of her lunch, again because she wouldn't stop throwing her food.  Then with her afternoon snack she ate one bite and then threw everything on the floor.  I gave her a couple extra chances because she didn't nap but it didn't help.  I decided to leave her in her chair and wash some dishes while Sam finished his snack.  For the next 2-3 minutes she was whining and fussing and asking for more food by pointing to the crackers.  I talked to her and kept telling her that if she would change her attitude and stop whining I would give her another chance to eat her snack (I knew she was super hungry).  

When she finally settled down I said "if you want some more snack you need to say 'momma, more food please''.  She immediately said momma and then signed more food please.  I said great job and here I come.  She did great, ate a substantial amount before she decided to throw something again.  

This is the first sentence Megan has ever used and she combined verbalized word with signs.