Are you currently using a CGM? I use the Dexcom G5 which has an iOS app and watch integration. I also have it set up to feed into a night scout instance and am working on a browser extension so I don't need to rely on the web interface so much (plus much more low key). I've found that I keep my watch on all night and really only charge it when in the shower and getting ready and it never seems to come close to dying. I literally just look at my watch and get my glucose. It's a game changer for sure.
I do have an integrated CGM but they're so goddamn itchy after the 3rd day, and they're designed to last 6 days. The cost of these things is too much to just use them for 3 days and change anyway.
