I'm not any help on that brand, but the Moen and Delta's I've worked on had a small allen set screw holding the lever on. Sometimes hidden behind a small decorative plug or cap. Maybe someone that has knowledge on your particular faucet will chime in with more information.
If you're going to "regret it in the morning", sleep until noon.
2012 Jay Flight 19RD
2016 Ford F150 XLT 2X4 SC 3.5L Eco Max Tow
2010 Tundra TRD DBL Cab (Traded)
2 new fluffy Corgis, Bayley and Stanley