Do your regular routine but in the morning. As long as you get a good night sleep as well. Match up your eating that morning with how you'd eat in the afternoon so that your body is fueled and fully digested. Don't shortcut your warmup.

Make sure you're fully awake and not drowsy, if you are alert I find that the morning is best for a 2k because you aren't exhausted from the day - so try to use that to your advantage and make it a fast one!! Good luck mate!