After much more searching, I was able to find my answer. Based upon below. I am allowed to use the word about because our products are over 2 servings.
21 CFR 101.9(b)(8)(i)
(8) Determination of the number of servings per container shall be based on the serving size of the product determined by following the procedures described in this section.
(i) The number of servings shall be rounded to the nearest whole number except for the number of servings between 2 and 5 servings and random weight products. The number of servings between 2 and 5 servings shall be rounded to the nearest 0.5 serving. Rounding should be indicated by the use of the term about (e.g., about 2 servings, about 3.5 servings).