Why feeding apart solves only half the problem
Feeding two dogs in separate rooms stops the faster dog stealing the slower dog's meal, which is why weight plans usually start there. It does not solve the accounting problem. Once the bowls are down, the day continues in shared space: training rewards from a common pouch, a chew each in the evening, scraps of attention from visitors, and the leftovers of whichever dog walks away from a treat the other dog finds. If your records only cover the separated meals, the plan looks precise while the shared portion drifts unrecorded, and the dog who gains is often the one quietly finishing both shares.
One page per dog for meals, written at serving time
Give each dog a dedicated page, screen, or sheet headed with his name, target plan as agreed with your vet, and current weight. Record each meal in three short parts: what was served, how much was served using the same scoop, cup, or scale each time, and what was actually eaten. That third column is where weight plans are won or lost. A dog who leaves a third of his measured meal is not eating his plan, and a dog who is always ravenous and finishing instantly may be telling you the split between the dogs is wrong.
Write the entry while the bowls are being washed up, not at bedtime. By evening, two dogs, two rooms, and two different appetites blur into a vague sense that both ate fine, and vague records cannot explain why one dog is losing steadily while the other is not. If different family members feed on different days, the feeder initials the entry, because portion habits differ between people more than anyone expects, and the log will show it before the dogs' weights do.
Weigh both dogs on the same schedule your vet sets, on the same scales, at roughly the same time of day, and write each result on that dog's own page beside the intake record for the period it covers. A weight figure floating alone in a phone note cannot be matched to what that dog ate, while a weight written next to two weeks of meals and treats tells a clear story you and your vet can act on.
Split shared treats by what each dog received
Shared treats defeat most logs because owners record the packet rather than the dogs. Instead, record the event once, then split it by reality. If both dogs received the same chew, write it on both pages. If the smaller dog's chew was taken by the larger dog halfway through, write a full chew for one and a half chew for the other. If training rewards came from one pouch during a joint session, note roughly how the rewards divided, favoring honesty over neat halves.
Read the two pages together at review time
Every couple of weeks, lay the two pages side by side and read them as a pair. Compare rate of weight change against recorded intake for each dog, check whether refusals cluster around one food or one feeder, and note whether shared treats are creeping upward as training progresses. Bring both pages to weight check appointments. A vet adjusting a plan for two dogs needs the contrast between them, because the right change for the dog who is stalled is often different from the right change for the dog who is losing too quickly, and guessing risks fixing one by unsettling the other.
If a dog's appetite suddenly drops, he starts leaving meals he previously finished, or weight falls faster than the plan intends, contact your vet rather than simply adjusting portions yourself. On a managed plan, a change in eating is information, and it deserves a clinical eye before it becomes a problem.
Run carefully, the pair of logs becomes reassuring rather than burdensome: each dog's progress can be explained from his own page. Keeping those separate meal, treat, and weigh-in records assigned and timestamped in KinsLe Care Teams lets everyone who feeds them add to the right dog's page without mixing the two plans.