I got my gars onto aro sticks without starving them. I started out by feeding them minnows gut-loaded on aro sticks/krill. I fed out the minnows one at a time. Once they got used to striking immediately at the minnows when they hit the surface, I started tossing FD krill between each minnow. Once the gars hit the krill with regularity, I started tossing aro sticks between each FD krill. Within 2 weeks, my 6 gars were completely off of live minnows and onto the aro sticks.
Now, I intermix their diet with the sticks, FD krill, and raw shrimp.
BTW, my mbu puffers are also on the aro sticks. They hit the FD krill when I fed out the gars and made the transition to sticks along with the gars.