What should my mother-in-law and sister-in-law always buy snacks and toys for their children? Should I stop them?

First of all, they did it because they liked the child. Since people have good intentions, we should treat them with gratitude. Secondly, buying toys will do no harm to children. If you don't want your child to eat snacks, you can eat them quietly. Finally, if you are afraid that they will do this and affect your children's feelings for you, I think you are worrying too much. After all, children and mothers have a natural affinity. After all, you are with your children and play with them every day. If your child is alienated from you because you don't have more time to spend with your child, you should spend more time with your child. Don't blame them for buying snacks and toys, but you didn't.