@Carlusha thanks I feel for you too, count myself lucky that one ear is much better than the other.
you need longer than 10 days stable before the DLM will relent and start reducing banding - any line noise will cause a delay in DLM action
DLM is constantly monitoring your line but it takes an unstable connection with many drops before being in banded profile it take more than just 10 days for DLM to relent and start reducing banding
this may help
https://community.plus.net/t5/Library/FTTC-DLM-What-it-is-How-it-works/ba-p/1322799