Call rather vet. He may need the pain meds
Some times holding food in front of him will help.I tried but did not worked. Do you mean forcing to his mouth? I do not like to do that. It may hurt him.
How long has it been since he ate? And he is drinking water right? Is he usually a normal weight? Is he wearing a cone or do you have him in the onesie? Is he active or lethargic? How are his eyes? Do the pupils appear normal? If you look at his gums, what color are they?
Sorry for all the questions. One more. Does he feel warm to you if you touch his ears?
Thanks. I talked with vet in the morning and surgeon assistant about an hour ago. If he has infection, can if find out by getting his body temperature?There are complications that can arise from this type of surgery. I am not trying to worry you more. I am just being realistic. Also, please note that I am not a veterinarian. I have worked in veterinary hospitals for decades but I hold no license.
A serious complication can be that the sutures in the intestines leak and can cause an infection in the abdomen. This will usually result in a very sick cat.
Another complication can be that the cat throws a blood clot. This is painful and I think you would know immediately that something is very wrong.
I think it is important that your cat be seen by the Vet today. Most vets would see your cat immediately to assure that there is no free fluid in the abdomen. That is detected by ultrasound or radiograph.
I know you called and were told tomorrow, but you have to understand that when you call a vets office the call is filtered by a front office staff and sometimes the vet is not aware of what is going on. Try to actually speak to the vet if you can.