Is my battery need to be replaced?

I am considering replacing the battery in my iPhone 12 since it has begun to degrade a bit in terms of battery life but isn't too far gone (yet) so I'm not in a rush to get this done for the time being. Overall I used to get 1.5-2 days easily (I bought the phone used, so the battery was at ~98% since I had it); now it is down to ~24 hours after 3 years.

Based on the battery data, am I due for a trip to the store to get this done or can I hold out on this battery until the 15 comes out*?
*It's coming up due since this one is a few generations old at this point (currently 3, will become 4 generations old soon).