Once the treating vet has examined your dog and set the plan, recovery at home rests on two things: following that plan exactly as written, and watching closely enough to report change early. Gastroenteritis recovery is usually measured in a trend across a day or two, not in any single meal or stool, so your consistency and your notes carry real weight in how well this goes.
Follow the plan exactly as set
Feed only what the clinic directed, in the amounts and at the intervals they specified, even when he seems hungry and bright earlier than expected. A recovering gut tolerates enthusiasm poorly, and returning to ordinary food ahead of the agreed schedule is a frequent cause of relapse. Give any medicine the vet prescribed exactly as labelled, at the stated times, for the full stated course, and never substitute leftovers from another illness or another dog. If you miss a detail, lose the sheet or cannot remember whether a step was morning or evening, phone the clinic and ask rather than improvising; they would far rather clarify than untangle a well-meant guess.
Water, rest and toilet access
Offer fresh water little and often rather than leaving a huge bowl he may gulp in one go, and note roughly how much he drinks across the day, since falling intake matters as much as vomiting. Keep the home calm: no visitors crowding him, no boisterous play, and a bed in a quiet, warm spot near the family rather than shut away alone. Take him into the garden on a lead for toilet trips so you actually see each stool and any vomiting, and so he does not eat grass, soil or scavenged scraps that could restart the problem. Clean accidents without scolding; a dog recovering from gastroenteritis has little warning and no intent to soil the floor.
Log the trend, not your impression
Keep one dated log for the whole recovery, written at the time rather than reconstructed at bedtime. Record each vomit, each stool with a plain description of consistency and any blood or mucus, water intake, meals eaten or refused, and a simple energy note such as dull, quiet or bright. Record medicine given, with the time, so a missed entry is visible. This log is the substance of any phone call to the clinic: 'two vomits yesterday, none today, stools soft but formed this morning, drinking well' lets the vet judge the trajectory in seconds, while 'he seems a bit better' does not. Continue the log until stools and appetite have been normal for a clear run of days, not merely until the worrying night passes.
Know the return signals
Phone the clinic promptly, the same day, if vomiting resumes after settling, if stools contain fresh blood or turn black, if drinking drops away or he cannot keep water down, if he becomes dull, wobbly or uninterested in his surroundings, or if recovery stalls and simply stops improving. Puppies, elderly dogs and dogs with other ongoing conditions have less reserve, so lower your threshold for calling for them. Do not wait for a booked recheck when these signs appear; the plan was written for the expected course, and the vet will want to revise it when the course changes.
Returning to normal gradually
When the vet confirms he is ready, return to ordinary food and exercise along the gradual path the clinic describes, not in one celebratory leap. Keep lead toilet trips and close watching for a few more days, because a relapse spotted on its first stool is far easier to manage than one discovered after a weekend of freedom. File the discharge sheet, the log and the recheck outcome together, and note what seemed to trigger the episode if anything was identified, such as scavenged food on a particular walk. Once he is fully himself again, archive the episode inside KinsLe's Pet Passport as a reference should his stomach flare another time.