A journey into 10 days plus fast: a few tips would be welcome!

I'm 31, male, single, currently living in a rural area. 140 pounds, 6 feet. Always been rather slim, could never put on weight. So weight loss is NOT the reason for fasting.

I'm on day 4 of a water fast. I did 2 pre-fast days with a very light diet of veggies and soup.

On the night of day 1 to 2, I had to go pee and I thought I was going to die. Everything was black and I remained curcled on the floor for who knows how long.

Day 2, 3 I spent a LOT of time resting.

REGIMEN
-Water only. Spring water, from an artesian well.
-2 strong coffee enemas (1.5L) morning and night.
-gentle hatha yoga exercises for 15-30 mins, once or twice
I have Bentonite clay at hand - would it be useful?

I struggled all my freaking life with focus. Always all over the place. I've had over 15 different jobs. 3 started bachelors, 1 finished (in which field I don't work) and 1 master dropped. I grew up eating a LOT of sweets: candy bars or 3-4 cookies or a joe louis after every single meal. Now learning trophology, this is a bad, bad idea. Also on pasteurised milk and spongy bread and jam, like a lot of us around. Needless to say, it's not building the best basics for a healthy life. As a teen and young adult, I used alcohol and drugs extensively; especially marijuana, hallucinogens and some cocaine. I also smoked cigarette from age 17 to 25. I was destroying myself very, very fast. I received two surgeries, one major which laid me down for 2 months (Pectus excavatum, Ravittch method, a 12hours surgery) and appendicitis. In the last few years, in order to survive money wise, I planted trees. It's a grunt job where you have to repeat the same motion 2000-3000 times a day, and sometimes repeatedly stomping a shovel on rocks, which sends vibrations in the wrist and elbow. I've had chronic pain in the right wrist, elbow and knee. I've often wondered why people in such a horrible shape are even being kept alive as there is no capacity to enjoy life whatsoever. I think it's because it wouldn't be good for the statistics of the country, wouldn't it? Anyway, I've been sober and living a monk-like life since 26, trying to recover.
The shitty thing is that I would love to be well and healthy because I have a lot of aspirations...

Anyhow. I'm heading on a 10+ water fast. I read on Chrisb post and I'd like to experience the clearing of the piehole.

I do not have support of "close ones" in my life as they behave in even more hectic ways.

So far:
Day 3: plank position requires a lot of wrist strain. I used to be in pain doing in. 85% of pain is gone.

Day 4: I feel my bladder sack and my kidney work when I pee. It's really weird.