I have a sauna in my basement and I felt it helped me a lot in my first few months. It was a place I could go and **** the door to clear my mind while sweating out plenty of nasty toxins I had built up over the years.
The sugar cravings will subside and as other have said that comes from your body being used to all the booze which turns to sugar you have been feeding it.
Give it time I did not really start to notice major changes until after month 2.