Downsizing asks a cat to trade a whole house of known routes for a compact flat where every sound carries and nowhere feels far from the front door. She cannot be told the move is permanent or sensible. She can, however, be given a small, complete world first, then allowed to expand it at her own pace until the whole flat smells, sounds and feels like hers.
Shrink Her World on Purpose at First
Set up one room before she arrives: her familiar bedding unwashed, her litter tray, water well away from the tray, food, and the scratching post she already uses. Bring her into that room in her carrier, open the door, and leave her to emerge when she chooses, even if that takes hours. Sit with her calmly, read a book, and let her map the room's edges, hiding places and heights without being lifted out for tours. A room she fully owns is a base camp. From it, confidence grows outward; without it, a flat full of open doors is just a larger place to feel exposed, and many cats respond by hiding behind appliances and refusing food in the open.
Let Rooms Be Earned, One Door at a Time
Open the next room only when she is eating, toileting and resting openly in the first one, which often takes a day or several. Keep each new door opening brief and supervised at the start, and close off spaces that contain moving boxes, trailing cables or cleaning supplies. If she bolts back to her base room, that retreat is information, not failure: she is using the system exactly as designed. Repeat short explorations at quiet times of day, place a worn item of your clothing in each new room so your scent arrives before she does, and let her rub her cheeks on door frames and furniture corners, since those scent marks are how she signs the flat over to herself.
Repay Lost Floor Space With Height
A house gave her distance; a flat must give her altitude. Put a tall tree or sturdy shelves where she can survey the main room from above, add a window perch facing birds or street life, and keep one high route that lets her cross a room without touching the floor. Vertical territory is genuine territory for a cat: it provides escape from visitors' feet, a vantage point for watching, and warm sleeping spots near rising heat. Protect the arrangement by keeping one shelf or perch permanently hers, never used for storage, and place scratching options near where she sleeps, because cats scratch on waking to mark the spot they trust.
New Sounds, New Smells, Same Daily Rhythm
Flats bring neighbour noise through walls, corridor footsteps, letterbox clatter and cooking smells from other homes. Do not try to silence what you cannot control. Instead, pair the early days with the rhythms she knows: feeding at the old times, play before your own dinner, and a settled evening routine in the same order as the house. Run appliances in short bursts while she is in her base room so the washing machine and vacuum cleaner become background rather than ambush. Mention the move at her next veterinary visit, and call sooner if she stops eating, hides continuously beyond the first days, or toilets outside her tray once the flat has had time to feel familiar. Family Sharing in KinsLe lets anyone staying over see her tray-cleaning times and meal amounts written down plainly.