Yeah I kept forgetting to a lot of the time .. My T finally got me to commit to a 90 day deal... At the time a med change was involved, It did show me a pattern. I do mine on good ole fashioned paper as its easier for me to scan across it and see a rise or a dip, Takes me 1- 2 minutes to fill in the spots before I go to bed.. I know alot of people use an app on there phone .

I do find it helpful in catching a shift before it really takes hold.