I live in an apartment on the second floor and while my four month old was sleeping someone buzzed up with a delivery. I asked them if they could bring it up but they couldn't so I went down in the lift to collect, leaving the baby alone. The front entrance in right out of the lift and the lift doors open right in front of my door so I was gone for about a minute at the most. He was still fast asleep in his cot.
It wasn't until I got back that I started to feel a bit uneasy. I won't be making a habit of doing it but is it ok to leave him for a minute to run downstairs to get a delivery or even get something from the car if he's asleep?