For us it’s about how far we will be walking, little walks to the park she walks, if we know there will be lots of walking we take the pram, those little legs do get tired after a while lol
With our first she stopped using the pram at around 20 months because our second arrived. With our second he is still using the pram because it’s too dangerous when it’s just me with the two of them as they can run in opposite directions 😂
We use it in busy public spaces, but have stopped bringing it for walks etc, I think it'll just naturally phase out over summer for us. Our son likes to be lifted up and my back can't take it 🤣 so we bring it if we know we're going to be out for a long time, but if it's just short trips out and about I leave it in the car xx