Good luck! When I weaned off the nails I started with electronic cigs as a supplement, then moved to RYO with extra nic from the electronic ( gum never worked, I always managed to OD on it....patches were a PITA ), started slowly with the pipe, gradually replacing "let's go burn one" with "let's go enjoy a bowl" until I managed to smoke just the pipe. About 6 months into it i ran out of tobacco one day and decided to bum a smoke off a neighbor, took two drags off it and almost puked; that was last September.
On a typical day I smoke a bowl for breakfast with coffee, another on the 45 minute ride to work ( in the summer I work as a tour guide ), another on the way home, and one before I retire for the evening. These are not huge, like a "group 4 bowl". A 50 g tin usually lasts about a week, week-and-a-half.....but then I don't usually smoke the same thing every day, I try to keep in my daily routine an English mixture ( breakfast ),VA/VAPer flakes ( during the day ) and an aro ( the last smoke of the day ).
I cannot speak for snuff as I have never experimented with that.