Just incase others didn't know and want a alternative to not turning off the filters, there are "feeding stations/rings" that you can buy or DIY. They break up the current/surface agitation within that feeding station leaving the food placed within to stay afloat longer and food that does drop down, drops to a general area incase you didn't want the food to end up in places you don't want it accumulating at. There are also worm feeder cones.
Or maybe you can just take a pinch of food and hold under the surface of the water for a few seconds until it's water logged (so it doesn't float back up getting into the overflow) then release it for the fish to eat. Some food may still get sucked up, but it's something. Hands will get wet, but I rinse my hands after feeding anyways.