I've found it kind of fascinating to watch... I also realized that I didn't calibrate before I started. I did calibrate the app on my phone, so it's reading the gravity as 1.012, but shows as 1.015 on the spreadsheet.
To you lager experts, I'm wondering or maybe really looking for affirmation, is it time to bring it into the house and start to warm it up for a diacetyl rest?
I think you could bring it to a warmer spot. Anyone doing the quick lager method could bring it to a warmer spot anytime the beer was in the 'second half' of it's fermentation (4-5 days, usually).