My bengal cat won't stop throwing up

My poor baby. He won't stop throwing up, he tried a new wet food ( the weruva pate and a freeze dried chicken treat/ bonker) and since then he hasn't stopped throwing up. He'll either throw up brown liquid with food chunks or clear liquid. He's been throwing up since the 28th and I'm worried about him and he hasn't used the litter box to my knowledge today. All he wants to do is sleep and he's been loafing. He's slightly playful but mostly sluggish which isn't like him. He's drinking water, but is there anything I can do? He's only a year old💔