That's exactly what it means -- you can't use this method in your first year of self-employment.
According to Nonfarm Optional Method in the Instructions for Schedule SE:
To use this method, you must also be regularly self-employed. You meet this requirement if your actual net earnings from self-employment were $400 or more in 2 of the 3 years before the year you use the nonfarm optional method. The net earnings of $400 or more could be from either farm or nonfarm earnings, or both. The net earnings include your distributive share of partnership income or loss subject to SE tax.
[Bolding mine.]
