Drug Crimes, Substance Abuse Quick advice

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I go to court in 4 days for a DUI charge the prosocutor wants to plea bargain with a inattentive driving and a being under the influence of drugs in return of dropping the DUI. It doesnt sound like a better deal to me 2 mistemenors for 1. but i dont know the laws please help myurine test was positive for meth thats how i got the dui. thank you so much