Welcome, tbirdy!
I don't think there is any "normal" progression of weight loss on Atkins. But 7 pounds in 2 days is not completely unheard of. It's probably your system flushing out excess water.
Also, if you go back to your regular high carbohydrate way of eating after induction, yes, the weight will probably bound right back on. That's why Atkins has the OWL (ongoing weight loss) and maintenance phases so we can learn how many carbohydrates (of what kind) our bodies can tolerate without gaining. Eventually you can end up eating almost anything... but you have to do it in the right progression.
I drink cream in my coffee, so don't have an induction-friendly substitute idea for you.
Anyway, best of luck to you!