Constantly being asked to enter Apple ID password
About 3 weeks ago my iPhone 5c iOS 12.5 started asking me every 2 days to re-enter my password for my Apple ID. Every 2nd time (so every 4 days) when I enter my password, it says my ID is locked then I have to unlock it using my email.
Why is this suddenly happening and how do I make it stop?
iPhone 5c