I would not focus on the pellets but rather try as mentioned,,,five or six different foods including the pellet's.When the fish are hungry,they will eat one or more of the foods. Discus
I kept at first would not eat anything other than beefheart which is a messy food and can foul the water quickly if all is not eaten and remainder cleaned up.
I began purchasing small containers of different foods to try and interest them in a variety in the way I have suggested.
After much encouraging and patience,I was able to get them to eat.. Frozen bit's of Krill (thawed and cut into mouth size bites) Spirulina brine shrimp,Cichlid Crisps,Tetra color bits, Freezedried plankton, Freezedried gut loaded crickets,bits of chopped red worms and earthworms,Mysid shrimp,and occasional blood worms along with Ocean nutrition flake and New Life Spectrum pellet's.
Would always feed or try to feed the fish before a water change rather than after.(less fouling of water)
I can't say it was easy and I did wind up with one runt that just would not eat like the other's but it too would accept a variety of foods although I still offered it the beef heart much more often than the other's.
Soaking the foods in garlic could in my view be helpful ,but fish must be hungry enough to try the foods offered.