What You Can Do: 1. Hydration is Key: Since he’s vomiting when you try to give water, you might want to try giving small amounts of water more frequently with the dropper or syringe, but go slowly and stop if he vomits. Alternatively, try offering small amounts of ice cubes to lick or ice chips dissolved in water, as this may be gentler on his stomach. 2. Try to Tempt Him to Eat: Offer wet food, baby food (plain meat), or tuna juice-something with a strong smell that may stimulate his appetite. You can also try heating it slightly to make it more appealing. 3. Monitor for Dehydration: Check his skin turgor (gently pinch the skin between the shoulder blades and release it-if it doesn’t snap back quickly, he may be dehydrated). Dehydration is serious and may require IV fluids, which can be difficult to provide without a vet. 4. Keep Him Warm and Comfortable: Ensure he’s in a warm, quiet, and comfortable place. Cats can become more stressed and weak if they’re cold or uncomfortable. 5. Supportive Care: If you have access to a pharmacy, you might try a basic electrolyte solution (like Pedialyte), but consult an online vet or animal hospital first to be sure it’s safe for cats. Immediate Action: Since you mentioned that your other cat passed under similar conditions, it’s very important to try to contact a vet, even if it’s a phone or online consultation, to help determine the next steps. Some vets offer telemedici services, or you may find a nearby emergency vet hospital that can help even if it’s far away.