I am concerned about the dosage my vet gave me for my kitten?

My 8 week old kitten is anemic and the vet put her on pet tinic. She is 2lb and the vet said to give her. 2ml 2x a day. On the bottle and online its says to give that amount per 10lb of weight. I am nervous, I don't know if vet made a mistake or if something bad will happen if I give her the amount the vet says.