Travel Pram Recommendation - Foldable with One Hand

[Huntingforhouses]

DH and I are off to New York in autumn with our baby who will be 14 months. He'll be working a fair bit so I'll be out exploring with the baby alone. I'm aware that many subway stations (including our local) don't have step free access. I was planning to just use the carrier but have slight cold feet about that as she's had a massive growth spurt and is quite heavy now! We currently have a bugaboo bee pram and I struggle to fold it at all let alone with one hand whilst holding the baby in the other. Can anyone please recommend a lightweight city pram that someone with hopeless motor skills and average strength can fold and carry up a set of stairs with a baby on the hip and a changing bag on the back? Thanks!

Silver cross zest. I have minimal coordination and can fold an umbrella fold buggy one handed. This then has a strap to carry it over your shoulder.
Also lies flat and has a huge hood so great for day time naps.

The YoYo is good because it weighs almost nothing so you can carry it up/down stairs, like on the subway, on your own with your baby or even a sizeable 3YO still in it. When you do want to fold it, it’s not completely one-handed as you need 2 hands to fold the handlebar down but you do that before you take baby out and next stage is easy one handed plus there’s a shoulder strap so you can carry it hands free.