I would suggest still feeding the four or so a meal and just see if your betta has any response to the change. My bettas get feed hikari gold betta, and theyre about the same size. They get 3 pellets twice a day and are fine.
Remember, a bettas stomach is about the size of its eye ball, so they dont need that much.
i dont know how big your screen is... But these pellets are TINY... Like, seven or eight would be equal to one of the normal pellets...
I offered a small ammount to one of my pettas who had previously refused even soaked and crushed regular pellets, and he inhaled them as though he had never eaten in his life... ( i had been feeding him with just simple thawed frozen blood worms)
I got the NLS GROWTH formula, not the betta formula.
the pellets you were using before may have been really big, like too big for your betta to comfortably eat so that may be why he refused them. The smaller ones may be easier for him and hence he ate them readily.
I feed the same food, sometimes. I don't count them out, they just get the tiniest pinch. Probably about 10-15 pieces if you were to count them out? Not a lot. I really just can't think of a good way to measure it right now. My brain is fried too. I guess I don't worry as much about overfeeding it because the pieces are smaller so I think they are easier to digest.
Remember that the tank your fish lives in is his or her's whole world. Ask yourself this question, and answer it honestly: would you choose to live there?
Yeah I use NLS and they're pretty small. My fish usually get a small pinch per feeding. usually about 8-10 pellets. But all but two of mine are full grown adults, so they can handle that and more. I try to feed based on their size.