Beloved,
I wish above all things that thou .... be in health...
3 John 1:2
"The first day of a caffeine detox is typically the hardest. 
Within hours, you’ll most likely become irritable and experience brain fog and headaches, which happens to 50 percent of people.
After One Week....Expect
to feel the full effects of caffeine withdrawal during this time..... it usually takes 72 hours to get over the
symptoms of withdrawal, which include constipation, headaches, insomnia,
and dizziness.
After One Month....If
you were a light caffeine consumer, your body 
will start reverting to
the way it was before you started to regularly consume caffeine. Your
brain will eventually begin to develop more adenosine receptors
(which communicate to you when it’s time to go to sleep and help
regulate blood flow to arteries) after being blocked by caffeine
molecules for such a long time.
After
six months..... a person should be back to the baseline. Sleep, mental
health, and digestion will all be back to the way they may have been
before the individual used caffeine." Domino/RavenIshak