I remember getting to 5 weeks and feeling more irritable than I was for the first few weeks of getting sober but that did ease up with a few more weeks under my belt. As to the sugar cravings, one of my main triggers for drinking was being hungry so I just gave into them. I'm getting on for 6 months sober now and only just beginning to get to grips with cutting that sugar down.
I also found myself lacking energy but that and anxiety levels started to get better for me, at around 2 months.
This of course is only my experience, we do vary.