Don't limit feeding for the fish - maybe target feed them a bit more so food isn't going to waste.
I get ammonia in my QT tank from uneaten food going into the filter - I have to rinse out the sponges 1-2 times a week to prevent it while I'm in the first stages of getting the fish to eat prepared foods. I would give all equipment a check over and a rinse out if needed, get a powerhead in your hand and blast out the rocks, see if anything nasty dislodges.
Another location could be the sandbed but don't do too much stirring there if there is a build up of anything, better done more gradually.
I am feeding, just a bit less than normal atm till I see what is happening with the tank. I'm going to do another param check when I get home tonight to see how the ammonia is after the water change last night. I also replaced my filter wool last night also.
I also stir my sand bed 3 times a week and have been doing this for about 6 months. Every water change I power head all my LR and siphon, water changes occur once a week to once every two weeks however, my tank has gone a month without water changes before without issue, due to working 90-110hrs a week at the time.
Last night I siphoned some sand out with my water change, didn't stir, just straight siphon, needed to do this for the move coming up anyway
@ReeferRob 12 months old.
I think the only cause could be the live worms, also I have beefed up feeding the fish to prepare them For the move, combination of both? I'm assuming the left over worms that go uneaten really have made the water bad, does live foods when left to die and go uneaten let off more waste than frozen or pellets?