Repitched Belgian Saison II (WLP566) in 500 ml DME at 20C, Brew Day -1
Based on boiling 24.00 gallonsliters at 1.056 for 90 minutes, this will decrease your wort by 1.50 gallonsliters, bringing your after boil OG to 1.060. You wanted an OG of 1.064. It looks like it will be under.