It sure looked like more than 3 months to me, unless NYC has a far more compressed autumn, Winter, Spring than I imagined. It gave off the vibe that Carrie was a prisoner, as well, trapped in the same window.
Now, for a truly “very slick very technicolour montage” showing the passage of seasons, see Notting Hill. MPK may think they just came up with it, but I suspect they stole it - perhaps unconsciously - from that movie where it was done exceptionally well.
I echo the sentiment on your bravery and sacrifice.