Octoberbaby, DS just turned 2. He loves Thomas as well.
I'm sure your mum will be just fine and will love having that special time with your DS.
I'm trying to cook some meals for the freezer. When I had DS it was only DH and I to consider for meals in the crazy first week of being home with new bub but now will have DS's meals to consider. I made a huge batch of bolognese sauce and divided it up so if I can remember to take it out of the freezer I'll just have to cook some pasta to go with it.