Hmmm, your doctor has advised you that alcohol is poisoning you and you should give it up, but you want to reward yourself after a hard day by drinking something that your doctor has told you is killing you, so you come to a sober recovery forum to see if its ok to continue drinking? None of this adds up, I think you already know the answer to your question.
I hope you stay here, learn, and stay sober.
Btw, 3 double whiskeys sounds like a lot to me for an in control, normal drinker.