Hi there,
I don't have a lot of time right now, but from reading your post, it looks as though your lo has a very long day.Riley at 17 months would not be able to handle that little sleep. I would definitely aim for a much earlier bedtime, esp as the nap is not that long. When you are on one nap, you definitely want it to be at least two hours long, and at least 11-11.5 hours at night.
If he is spending a lot of time alone most of the day, walking around and playing by himself, instead of being engaged by the teachers and engaging in activities with his peers, it stands to reason that he needs that attention when he gets home.
Gotta run, Riley's bedtime!
Allright, he's asleep...
As I worked in a daycare before, I know that naptimes are stressful for everyone. At that age in the US, the teacher can have up to 4 children to tend to at naptime, there are often more children in the room than that. Not always the same person did naptime at the place where I worked, it often varied depending on breaks. This makes it hard all round. As regards communication with the teacher, I can say sometimes it is difficult to have an in depth discussion with a parent at pick-up or drop-off. You are on duty, need to watch the children, keep an eye on who is coming and going, help the children through transition. It may be best to make an appointment to discuss your concerns and ask any questions you have. As a parent, you definitely have the right to know what kind of routine you lo has and what practises they follow.
All the best,
Michelle