Preboiled and cooled 2 gal water, steeped in 3 gal and sparged with 0.5 gal for a 3.5 gal boil
Based on boiling 3.50 gallonsliters at NaN for 60 minutes, this will decrease your wort by 0.00 gallonsliters, bringing your after boil OG to NaN. You wanted an OG of 1.050. It looks like it will be over.