Good job Mazza! That drink sounds awful!
Andrea, I understand why that would be an issue for some people. Your plan to go caffeine free after your morning cup is a good idea. I recently went off caffeine upon my doctor's advice, but I still drink quite a bit of decaf black teas and coffee which techincally contain a small amount of caffeine. I also drink a lot of herbal teas, which are truly caffeine free.
Personally, I don't think caffeine withdrawals are that bad. I didn't get any headaches, but I was very grumpy for a few days and then it passed. Everybody is different, so just be kind to yourself if you do experience withdrawals and tell yourself you'll get through it. However, if you're continuing to drink caffeine in the AM I don't think withdrawals will be an issue.
I've now almost entirely lost my desire to have a glass of wine with dinner. This is great! When this challenge ends I think my wine consumption will be much lower than it was before. I adore wine and don't want to cut it out of my diet forever, but reducing my general consumption is probably a wise idea for my waistline!