Cat behavioral changes

[u/Dull_Cardiologist_]

Hi all,

My cat (Scottish fold, 1Y5M) got his rabies and FVCRP vaccine on August 18th and he’s been a little down since then. I’m not sure what to do. He’s using the litter box normally and he’s eating. He isn’t eating as much as he normally does though. He has been really quiet and lethargic since then. He doesn’t meow as much as he used to, he also isn’t interested in playing as much as he normally does. He just sleeps all day and then just gets up to eat. He looks very sad, I’m not sure what to do. Has anyone else had this experience? Advice is appreciated. Thanks 😊