The answer might be in the figures. Evenings are the only lift for NEW. K&J and Love Song Dedications.
Maybe the softer music is making an impact? If so, a gold/AC format focusing on MORE MUSIC and LESS TALK (hmmm, sounds familiar) might help?
A mature breakfast host focusing on 8 songs an hour - 3 more than HIT and 4 more than MMM. 80s based gold.
Daytime - I’d whack MMM with the Greatest Hits format. 70s, 80s, 90s and pure inoffensive pop.
Drive - I’d go back to live and local. Do the Classic 5 @ 5. Stuff like that.
Evenings - 70s and 80s based love songs. Night is the only demo that went up
Weekends - MORE MUSIC LESS TALK. Focus on while the other mob are doing country, football or Australia By Night, we’re doing MORE MUSIC.
Go back to simple stuff. Over-serve your market with music.