Two things without spending a lot of money. Increase select harvest, take those slots out, as many as you can. At least for 2 more seasons. Up to 500 per season. I might drop down the minimum to 12. Increase forage cover and nesting. If you have any drawdown and exposed out of water shallows build nests and covers. Out of anything, pvc, rocks, large structure, pallets, rip rap, a little bit of everything, and lots of indentations filled with pea gravel to 1/2" rock. If you can add more forage, frogs, crawdads, gambusia, shiners. Whatever is most cost effective. Do that two year plan and then wait.
You have the too many mouths to feed not enough food syndrome. Harvest heavier, add more forage and habitat for forage to reproduce and growout.
