I think you are using the sizing for the whole nut...the kernel is 0.7 cubic centimeters, which is equivalent to 0.0237 fl.oz. which should be right "almond" size amount be...
You are absolutely right! That is what I get for being lazy about reading .. so a bit less than a quarter of a teaspoon would do it... That feels really low to me. That said no wonder it takes like 5 months to go through a puck! There is someone on here who actually mentioned they only buy samples - clearly one can go far on samples on alone