I have to be honest, after seeing someone with a pushchair with a slightly older child, around 2 years old, loose control out a pushchair on an escelator, I would never take my tiddler on one in his! Child was badly hurt, as was an older lady who was knocked over by it. I would suggest in future that you have a sling or carrier and a lightweight stroller so that you can easily keep control of baby as you carry him and be able to carry the stroller at the same time. Much safer for baby, people around you and you.