I'm a very busy, very important person, I don't have time for the little people.:jointsmile:
I doubt dillution will work for you. With an everyday smoker even 2 weeks would probably not be enough time to get clean.
Subbing really is your best bet.
When a physical is involved I keep my bottle of synthetic urine in my pocket with a heat pad on it till the physical is over. Then I get dressed and stick the bottle in my shorts. Sometimes it might be a good idea if you don't know how the exam is going to work is to keep the bottle in your shorts just in case they do the UA first.