You're washing fine. 2-3 times a week is recommended.
How old are they? sorry, I forgot to check your page again.
They always come undone before they tighten. It's part of the process. The problem with starter methods is that it creates a false feeling that they are further along than they are. Them untangling seems like they are going to take longer, but it really is a step forward. They have to loosen up in order to tangle and become mature. You don't want to do anything to stop this unraveling. Every time you "touch them up" you are really resetting your progress back to day one.
Just be patient.
I was a cook for 5 years when my locks were just starting out. You can always wear a plain black tam while at work to cover your hair. It is the most professional look. And tam's wont interfere if you don't wear them all the time.
Dr. B's is great of you have soft water. if you have hard water, it will leave a residue and won't wash out completely. It can weigh down your locks and make them feel sticky after a while