As well as talking to your vet about diets, you will need to encourage your cat to exercise. Try playing with him.

Feed your cat just twice a day morning and evening. Follow food instructions printed on container as to amount for each meal, and stick to that plan.

if he’s on medication this might make it harder for him to lose weight. poor baby, take him to the vet and have your vet start him on a diet where the vet will instruct you how much to feed your cat. don’t put him on a diet yourself! good luck

ask your vet or if he eats 3 times a day cut it down to 1 or 2

Cats typically need about a 1/3 cup of food a day, if you stick to that amount and don’t overfeed him the weight should start coming off. Also, buy him toys that will get him moving.

Is his best friend called Odie?

Don´t give the cat more lasagna, and there are diet cat foods on sale if you wanna try that , well not u , ur cat .

Talk to your vet about proper diets.
My friends cat was obese and lost a lot of weight by following the vets dieting instructions.