Stay the course.

Perhaps the last efforts from two years back didn't remove enough LMB, and perhaps there is a need to concurrently bolster the forage base like what davatsa says about adding mature bluefill.

Also, do you feed your bluegill? This may help their overall health and ability to spawn stronger and longer!

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."