The purpose of alimony is to protect children's life, education and other necessary expenses, rather than a compensation for adults in the future. If deposited in the bank, alimony can't be alimony, but deposit.

You're divorced, and there are related agreements on alimony. You have to pay alimony according to the agreement, and you can't use this deposit method. Marriage has come to an end, let's relax. If it is later found that she is not good to the child, she can apply to the court for changing custody.