My 1.5 year old neutered male cat is outdoor/indoor cat, eats and sleeps outside but is allowed outside whenever he wants. His whole life he is struggling with flare ups from cat herpes, went to the vet around 7-8 times ( before i found out it was feline herpes). Also his whole life his appetite varied. At first i tought its because of his herpes flare ups but it wasnt. So i tried to change his food because he juts wouldnt eat enough so maybe he was bored of the same food, tried many different types of food, dry grain free, cheap dry, expensive wet food, jelly, gravy, pate, fillets, combinations of all that i mentioned. For example, he eats 3 cans of quality wet food for 5 days licks the bowl clean every time but the next 5 days he leaves more than half of the same quality wet food. So i give him something else to eat for the next 5 days, he also leaves more than 50% of the new food. So i get persistent and give him the new food again for the next 5 days and he licks the bowl clean. Long story short... 10 day period, cat eats normally for 5 but the other 5 eats small amounts which lead to him being slightly underweight. He is very active and acting normal. Should i be worried?