As someone has said before on these forums, it’s not how far you fall that counts, it’s how quickly you get back on.
1: no I wouldn't predict the number of coffees your going to drink, you might have 5 one day and 2 the next, which will only cause more trouble than its worth. Inject n' Drink (if you can)
2: i wouldn't personally put juice into water as it will raise your bg very quickly (simple carb). Drink filtered water or bottled or herbal teas or something.
3: Get some accountability, get some software to give you graphs and trends (to predict those bumps

), Get a friend to keep poking you or ask you how it going once in a while, someone to report to. Take your time and count every carb. Hang on tighter and don't give up, all is not lost.
