How do I make sure that my two year old is finishing his meals in daycare? The teacher says he eats but I am still worried.

Try to check with the daycare teacher how much portions your baby eats in school. Normally teacher will feedback. For me, I will continuosly checking with teacher 1 to 2 weeks and if I notice any patterns, e.g. picky on certain food, I will feedback to teacher. As long as the baby doesn't look extremely hungry after you pick him up from the school it means he is eating well. If you are still worry about he is not eating enough, you can arrange with the teacher to let her/him offer a bottle of milk before naptime or after wake up from nap.