i think easing back into social life is a good idea for the early days/weeks/months of sobriety. focus on taking walks, going to lunch, coffee rather than meeting at a bar. its good to have some friends who are either completely sober or are just not big drinkers. there are some people who wont bat an eye if you suggest getting a cup of tea or not having wine with dinner. i think those are good people to spend time with in the beginning. i dont know if youre doing any kind of group like aa or smart recovery but that will put you in touch with other sober people.
as for sleeping, i took melatonin last night and slept a very solid 7 hours. im on day 3 now and often have insomnia or wake up at two, three, four in the morning and cant get back to sleep. i took 3 mg of controlled release. recommended!