Wow, yeah... no way in hell does your little one even remotely look like a plasma. LLL is terrible regarding living creatures. They do not take good care of their snakes, they do not breed their own babies, and everything is mislabeled.

Your baby is indeed an amel. Some people might call it a reverse okeetee because the banding around the saddles is thicker than usual, but most people would want even thicker before they'd call it that. It is also completely normal for the colors to be more vibrant towards the front of the snake.

Regarding feeding, go by the snake's size. Don't push it because regurges are a pain in the ass to deal with. The food item should be no larger than 1 1/2 times the size of the widest part of the snake. I tend to follow the munson plan but slightly modified as I usually feed every 7 days no matter the age. My work schedule/load makes it hard to be bouncing around the week. Much easier to just feed every Tuesday which I have off.