M.3.
Yes...there are nannies who will pick your son up from school and stay with him until you or your husband get home from work. I am actually a daycare provider, not in the same position as you, but I know many moms who do work outside the home who are in a similar position as you who have found someone great to take care of their children. You can also consider in home daycare situations if you're open to that. A friend of mine takes one of her "kids" to and from preschool on the neccessary days. It is certianly possible to find a great fit for your family even with preschool being in the schedule. Good luck!