it's very important that he gets his tablet with his condition. if you can't be sure he eats the tablet then you may have to resort to what you may not want to do. sometimes cats will take them with food and make it look like they ate them and then go around the corner and spit half of it out. you can get a pill helper from online or on the vets that will make it easier for the cat to take the pill but personally i think it's easier to just use your hand as the pilling devices can scratch the throat. once you get the hang of it your cat will be used to it and it won't be such a big deal for him.

you could try it in tuna, or butter or pate but you really can't be sure he's not spitting it out somewhere behind the couch when you do it this way.

i find sitting with puss in your lap with his back to you, then scruffing him which will release endorphins to calm him and with your opposite hand hold the pill and press your pinky or even the pill into the side of his mouth place it in the back as far as you can then close the mouth release the scruff and rub the base of his chin to be sure he swallows. then give him a treat or some dinner so he associates it with a praise. these pills will be long term and with time they will become easier to get down.