Twist and Rip Newbie eek...
You should be doing nothing. Locks don't form over night. Not even in a week. In fact, they will keep unraveling and reknotting for the next few months. On average it takes about a year for mature locks to form.
Don't rubber band them, ever. And there's no need to tie them yet. Wrapping locks is more for decoration than for helping them knot. Bands tend to squeeze your locks too tightly and get sucked into the lock where they can rot.
All in all. Your locks are days old. That's nothing in terms of how long they will take to mature. Just be patient. TnR and back combing are methods used to blueprint where the sections will be. They don't form locks. They will unravel. That's natural. Check out the timeline forums