A few basics to think about wrt your situation. The first rule is its your pond and you make the decisions. We will help and support you during the process. An informed pond owner who knows what to expect in advance is best prepared to do the job right.

Generally (rough #s)a pond which is fertile and has supplemental feeding (not an aquaculture operation) will support 400-500 lbs+- of fish per acre. Of that 25% by weight will be the top line predators and 75% forage fish. You have that by now as described (in the south in 2-3 years a new pond with no changes in mgt. reaches bio-mass capacity).

If you take away the feed and keep the pond fertile the number drops about 25% . If you don't reduce the number/biomass of fish by the amount of productivity reduction you can cause serious damage to the quality of the fish population. You may well have lots of skinny poor conditioned fish both predators and forage.

It is not a pretty sight and it takes a while to fix .

I understand the goal and wishes and IT CAN BE DONE. Just start taking out fish well in advance and a bunch of them. My guess 100lbs per acre at 25% predator and 75% forage within the first few mths after you quit feeding. Expect wild swings in population dynamics until you stabilize at the lower rates. Little to no reproduction and missing year classes of both BG and LMB are common. The fish that are in good enough shape to spawn can die as a result of the stress when coupled with not enough food. Their offspring are often totally consumed resulting in missing year classes.

It will be a management challenge to make the move with success. It has taken 8 years of work to do this on ponds where someone (not me) fertilized for a few years and then essentially stopped. After the crash I got to start the rehab process. In that case 75% of the productivity was lost with no reduction in fish #s. What a mess to deal with.

This effect is exactly why the pond management books warn about starting a fertilization or feeding program and not continuing it. Doing so is far worse than never starting such a program to begin with.

Good luck and let us know how things go.