There are phone apps like Moment that not only give you feedback on how much you use your phone each day, they can also tell you how many times you checked your phone.
Would that be helpful? I know that Moment can help you set targets and help you track how you’re going over time, where there have been bad days, good days etc...
No one would need to know but you. I personally found it helpful because each day it would be like a reminder: it’s okay to check your phone less often...
ETA: Moment is designed to help decrease, rather than increase our reliance on and habitual phone use, using the same reward/dopamine centres in the brain that other apps (like FB) use to increase our phone addiction