I wouldn't hint anything at this point. I guess you could try not answering to see if he behaves differently. It's not as if you couldn't text later in the day.
3 word texts wouldn't do it for me either but this stage won't last forever. I don't see how it can go on like this forever.
I can relate to your focus on the dates and the patterns of your communication but it would be easier for you if you weren't so aware of all the details. This is where detachment and GAL come in. Easier said than done.
Hang in there and good luck.
Me: 51 H: 52 T: 23 yrs M: 19 yrs S18, D16, S14 (special needs) PA: 2003/2004 Piecing: 2004 on Suspect H had EA: 8/2012-12/2012