Signs he’ll propose?

My boyfriend and I have been together for a little over two years. I’ve been hoping he’ll propose around Christmas, but it’s hard to tell if he will while he’s stationed far away. After asking me what I wanted for Christmas, he jokingly suggested “maybe a ring?” It’s hard to tell over text if he’s serious or not. What do you think? I’m not sure what the obvious signs are. Or maybe I’m overanalyzing it. 😅