slinkyboo
i feel for you, having a distrought child in an environment that is alien to you is not at all easy.
We are in France too and we had in retrospect a minor hiccup but what felt like at the time a nightmare when DD started in Petite Section (she hated it) and I felt ill-equipped to reassure her as it was all completely new to me and so very different to nursery or even Reception in the UK.
But, to reassure you, she is now a happy Grande Section child and doing really well.
But she does hate the canteen! She goes two days a week and comes home two days. Evy single school day, she wakes up in a panic and asks, "is it a school dinners day?" and if the answer is yes, she is whingey and sulky. If the answer is no, she is fine.
It is really hard. I don't quite know what goes on in the canteen, but my DD does not like it and has not grown to love it or even accept it after a whole year in MS of being there twice a week.
We persevere with it because we feel it is hugely helpful for her French and it is time for her to have some social time with friends.
Perhaps you could do a couple of days at the canteen, a couple at home? That might helpmyour DS and encourage him a bit, but beware he might get jumpier than ever on canteen days, as our DD does.
I do wonder if we're doing the right thing sticking with the canteen twice a week. It obviously makes me life a lot easier, cuts down the lunch time pick up and drop off, but I am not totally convinced by it.
Hope you find a solution.