How to have more meaningful conversation?

Lately me and my boyfriend just turn on the TV or talk about what we want for dinner. He does talk a lot, but I don’t. I’m very quiet and no good at small talk. He’d like me to talk more, and I know I want that as much as he does if not more. I don’t like not having anything to say, it’s just that I have really bad social anxiety so I’m not used to making a lot of conversation. Everyday I tell myself it will be different, but then it’s the same routine. This probably requires more effort than I realize. I just feel I have nothing to say at all, let alone something worth saying out loud.