She moves less, sleeps more, and the food that once maintained her now quietly adds to her, while the muscle underneath slowly thins. That combination, more fat and less muscle, is the real opponent in a senior cat, and it is beaten by measurement and patience rather than by cutting her meals hard. One boundary runs through everything below: the numbers belong to her vet. This guidance equips you to run the plan well at home; it does not set her target weight or her daily amount, because both depend on her frame, her health and what an examination finds.
The Vet Sets the Goal, You Run the Plan
Start with a senior check at which her vet weighs her, feels her body condition over her ribs, spine and waist, and sets a realistic goal weight and a daily food amount to reach it gradually. Ask what pace of change is right for her and how often to report back, because slow is the whole point: an older cat, and especially an overweight one, should never be put on a sudden severe reduction, which is genuinely risky. Bring her current food details, her treats, and an honest account of who else feeds her, including neighbours and grandchildren. If she is already losing weight without any change in her meals, say so at that visit, because unexplained loss in an old cat is a symptom to investigate, not a head start.
Measured Portions and Honest Treat Accounting
End free-feeding: food left down all day cannot be measured, and measurement is the plan. Serve her daily amount in weighed portions, split into smaller meals across the day so she is never long without food and never faces one large bowl, using a kitchen scale rather than a scoop, since scoops drift and hands are generous. Everything she eats belongs to that daily amount: treats, the gravy-rich extras, the tidbits from your plate. Either reserve a small part of her measured ration to hand out as treats, or subtract treat days from her bowls honestly. Feed her separately from other cats, and keep her out of their bowls afterwards, since a senior on a plan sharing with an unrestricted cat will simply eat the difference there. Recheck her weight every few weeks, on the same scales, and adjust in the small steps her vet approved.
Movement She Can Still Manage
She will not chase like a kitten, and she does not need to. Two or three short play bouts a day, a few minutes each, with a wand toy trailed slowly at ground level where stiff joints can join in, keep muscle working and appetite regulated. Stop while she is still interested rather than tired, and let her win the catch often, since success brings her back tomorrow. Food puzzles set to easy, part of her measured ration hidden in a snuffle-style arrangement of scrunched paper or a puzzle board at floor level, turn eating itself into gentle movement. Place her essentials thoughtfully: everything reachable without climbing, but not all in one spot, so her day still contains small journeys between bed, water, tray and window. A cat never asked to move loses ability faster than the years alone would take it.
Watching the Trend, Not the Day
Judge progress monthly, not daily, because her weight will wobble with water, toileting and time of day, and daily numbers invite panic adjustments. Feel her as well as weigh her: you should be able to feel her ribs under a thin covering, and see a waist from above and the side, while her shoulder blades and hips should not jut sharply, a sign of muscle going, not fat. Guard both directions: gain means the plan needs her vet's review, but so does faster-than-agreed loss, new pickiness, or any drop in appetite lasting beyond a day, since an old cat who stops eating needs attention. Keep every weight, portion change and vet target written down, and that running record, held in the Pet Passport notes KinsLe maintains for her, turns each appointment into a review of evidence.