My son was moved to a new class mid August in his daycare , I really like the teacher , she is so nice but every week she is either losing his food containers or at least 2-3 bottles a week

I pick up my son at 4:30 pm , she leaves at 3:30 and another teacher comes in so her response is that she doesn't know what happens after that

I don't want to complain to the supervisor as I don't like messing with people's jobs especially that she is so nice and always in a happy mood

It's just driving me nuts that every week I have to go buy more sippy cups .

I drop him off with 3 filled up bottles , ready to go . 80%water and 20%apple juice

What would you do in this scenario ?