Having been an organist at Methodist chapels for over thirty years I found the use of 'Tell me' certainly declined fairly rapidly and I don't recall playing it for many years - replaced by 'modern hymns' which many of the older congregations struggle with - and still do in smaller Chapels where some organists find 'modern'rhythms difficult to play
I am delighted that you still use the term "Chapel" as was always the case in my family.
To return to a discussion on here many years ago, does your congregation prefer Hereford or Wilton?
Usually use Hereford - much nicer tune in my opinion but is slightly more difficult for congregations that are smaller number like 4 or 5 as is the case in many chapels these days if still open although Wilton is also used on occasions