Understand your situation. I also experienced my boy喊要我解, 解完佢就爬起身, 叫佢坐好會跌跌(佢仲笑比佢激死). My boy is 19-mth now. I always insist 落地吾餵比佢食 till the next meal (no snack in between). He behaves well now. When we take him out dining, people around always appreciate him for he can stay at the table with all other adults.