Whitish smoke is usually condensation in the exhaust that is evaporating when it gets warm. this is somewhat normal if it sits outside or something but if not then it becomes a bit more of a challenge. Anti freeze is the only other thing that burns white and we do not have to worry about that. if you can rule out condensation then it is a jetting issue. with a motor as new as yours i would assume it has some water inside the canister. I cant imagine jetting being off on it unless you have something done to it to make it lean out. just my .02 though steve
2019 Maverick X3 XDS Turbo R
2003 TRX 400EX
2016 HONDA RANCHER