detox advice please, is my idea ok

[morning]

Hi guys,

just joined to ask some advice, my company is running screening tests in about 6 weeks time and i aim to detox.

I am 34 years old, 6'1" tall and 245lbs
chronic smoker for many years. I smoke solidly for 1 week and then i have a week at work where i am clean (work at sea no smoking at all) then another week at home chronic smoking and then a week at work clean and so on and so on.

I am stopping right now and this will give me 45 days before testing, not sure what sort of test.
Would the best course of action be for me to start exercising and trying to lose some weight and get the thc out of my fat cells quicker, or am i better off just letting it happen?

If as i think, when i lose weight the thc will be released from my fat into my blood where i believe it is detectable for only a few days as with saliva and urine.

so, is this a good idea?

any advice gratefully received....