I just put some NLS pellets in & my fh will bite then spit them out.. after a while he will bite again & slowly finishes the rest.. I think he's adjusting to the new food..
Strangely though, there's a few that were still floating & my fh ate them without waiting..
Oh yeah, he's around 7.5" now so the 3mm pellets aren't really difficult for him to eat & he takes in a few pellets at a time..