I got him I think maybe 6 months ago, give or take a month!
I feed him foodsticks, massivores, mp and sw sometimes.
I think he's over a foot now, not 100% sure but he's big
This is a pic of him when I first got him
I give my fish pellets only as soon as i take them back, usually takes 2-3 days.
The trick is to not provide any other food for the whole tank but pellets, that way he will see others eating and know that, that is food now.
Never takes more than 3-4 days for me to convert