I'd like a few months in the South of France myself - I envy you. I hope nothing happens to upset the plan, and you all have a lovely time.
I think you should find a ped there. Do the standard wcv with a ped in Canada before you leave, making whatever vax decisions you like. Get copies of the medical records to bring with you, and pass them to a pediatrician there, continuing wcv on whatever schedule that ped recommends. When you return to Canada, get copies of the medical records again.