Lots of Questions About Juice Fasting

I’m 6ft 250lbs and 35 years of age and this is my first juice fast. Well this is my first fast ever! I already started the fast and I’m currently on my fifth day and I have lost 12lbs.

I have a lot of questions because I have been reading so much and I think I have too much information that I am confused!

I would like to know for a guy my size how much should I drink?

I love fruit juice but vegetable juice is only ok. When I drink the vegetable juice I have to have it with an apple or something.

I keep reading not to mix fruit juice with vegetable juice, why?

I drink about a gallon of water a day, is that too much?

The amount of juice I drink varies. I’ll have around 16 ounces of fruit juice when I get hungry in the morning followed by lots of water. Then I will have 16 ounces of vegetable juice followed by water. Sometimes that’s all I have for the day other days I may have an extra serving of vegetable or fruit juice. To me I feel as if I’m doing something wrong!

Please help!! Also I take a Centrum silver multivitamin in the morning with a flaxseed oil pill also. I almost forgot when I started I did an enema but I don’t know how well it went. I used the bathroom but it was mostly liquid?

I also did a salt water flush and that made me go a lot but mostly all liquid. I have been having bowel movements daily after I drink my fruit juice and that is mostly liquid. Am I going to release a lot of old fecal matter later?

Last thing I haven’t experienced any pains or headaches? I have been tired but not that much, is that normal? I will go to the gym tonight and play some basketball with light weight training followed by a steam bath! Thanks for reading my long post and thanks for any feedback