You learned the answer to this question as a little kid anxiously waiting for Christmas morning to arrive. The more you wait for Santa, the longer it takes him to come. I use to, in the week leading up to Holy Toy Bonanza, lope around my house nonchalantly. I would ban the Christmas Spirit from my soul, opting to read comic books and watch scary movies. Like a meditating monk, I'd force thoughts of tinsel and egg nog and stocking hanging from the chimney with care from my feverish mind.
It didn't really work, but Christmas came anyway and it was awesome. Especially the year I got a Castle Grayskull playset. You probably have no idea what I'm writing about, but the skull-mouth shaped draw-bridge was pure little boy crack.
A watched pot doesn't boil. Freelance checks don't come if you stare at the mailbox. Counting calories is the longest distance between being chubby and a little less chubby.
Look, he'll pop the question when he's damn ready to do it. He sounds like a Man with a Plan. Trust his plan. Relax. He might just have something up his sleeve. Biding his time, waiting for the best way to surprise you. Or he's just taking a little while to build up the courage to ask the most important person in his life the most important question he can ask. I mean, it's not a question that should be asked lightly. This is his moment. Don't rush it.