Yes if you want to go to the bother of entering every single docket / purchase. Dont get too worried about it. Once you have a few in you will be fine.. just dont show a docket for one you havent entered
Just go to the place you buy your ration and ask for an account statement for the last 6 months if a new entrant in to BB. They should be able to print out all purchases in a couple of sheets. No need to write into farm book.