Forgot his lunchbox

When I came back after taking David to school, I saw his lunch box and drink bottle were still on the table and thought to go back to school to give them to him but then I realised that they have already started their lesson and I didn't want to interrupt even if it was important. So I decided to go there on their first recess instead which was 11:15 am and cancelled my plan to go to the shop. Sigh..when can David learn to prepare and check his things before going to school, he was lucky that I didn't work. He still needs to be reminded all the time.