Hi Jen,
Well as you know I am in it 8 days analog free. I can say yes it is different also yes a little anxious is normal IMO. I guess I do not look at it as a analog replacement but as an alternative. You may have to try several juices to find the "one", There is alot more fore thought that goes into vaping but it really can be fun. I would say drink more fluids is always a good idea. You body not only has Nic but lots of chemicals in analogs. I myself have noticed my lungs are trying to clear (have a cold to) I notice a difference in flavors and smells.
My worse times are morning and evenings. I have a stronger juice I use first thing in the am and I vape through the urges (sure they still come) heck it was 33 years. I have this mind set that it is an alternative and not a replacement. How much did you spend on analogs? Look at it this way yes in the long term you save but at first allow yourself some time to experiment. I myself did over a carton a week times 54.00 per carton. Worth investing some $$ in the vape because no matter what in the long term I will come out ahead.