School preparation is normally a nice step a parent can take at an early stage, what really help to do this is the book list or list of books gaven by the school.
It very amazing when seeing parents been so proactive like you are doing Ma" , infact it shows a serious concern that you have as a mother.
Some parents will allow schools to resume before starting this preparation which is a bad idea.
Seeing you standing in for your husband shows that you are really a caring mother to the kids and a helper to the husband, you really showcase the biblical elusion that woman is a helper to the husband likewise the husband.
Hope children were happy seeing you from the book shopping mostly the exercise books.
I really appreciate you ma'