Roll each piece of fillet in breadcrumbs and put the pieces on a napkin. It is better that the pieces do not touch. Get wet and stick together.
I’m doing this for convenience. Prepare all the fillets, and then fry them calmly.
A little advice. In a bowl with breading, put a few pieces of fillet, cover with a lid, a couple, shake three times – it’s done. Breaded fillets, clean hands, saving time.