Can anyone give me some advises please?

Hm, that's a tough one. Since you're both shy, try to make it a little less awkward. When he asks questions like that, say something like "Haha, you've been in this cl for almost have a semester and you still don't know? It starts at - whatever time - " Try to joke with him or make him feel less uncomfortable. Since you're both not very outgoing people, try to take the dominant role, and make him feel more comfortable first.