Dog worries

Hey everyone in 17 weeks tomorrow thank god thank god! And I was thinking about my pup a lot! (Not really a pup he's 2 but ya) he is like the center of my world sort of I sleep with him snuggle him all day (I currently am at home) I do everything with him I adore him so very much!!!! But he play bites that's one problem I'm very worried about 😔😔😔and it's our fault becuz when he was a baby with no teeth really it was cute but he still does it and now it hurts any advice on untraining a dog to play bite? Also how do I get him ready to not be the only one beside me?? I wouldn't want him to feel neglected j know it sounds funny since he's jus a dog but he like does love attention he barks when I do my own thing a lot lol and loves to play with me and snuggle he's a Maltese btw maybe that explains alot😃😃😃anyone else having doggie thoughts!