I have this girl who stuffs all her food in her mouth at meal times. And she leaves it there. Most of the day! I have left her in the highchair for an hour thinking she would get the point and chew and swallow it. Nope.I have given her one peace at a time and given her some time to finish that peace before giving her a new one and even asked her to open her mouth to see if she had food in her cheeks but she clamped her mouth shut or cried. And if should mention she is almost two.