The natural progression of locks is 1 step forward 2 steps back. They will tangle, then get washed out. Then tangle again (A bit more this time), then get washed out. They tangle even more. Eventually they will start to tangle enough that they begin to shrink as the knots and loops catch onto themselves. This takes months and months. The messiest stage is around the 4th month. Then they will start coming together more nicely.
Don't wear anything on your head when you shower. Don't tie them up or wear a hat until they completely dry out. You can touch your hair, but doing it too much can mess with the progress. The oils on your hands will transfer to your hair and make them a bit slick. The only time you really need to touch them is when you separate the sections to prevent congoing.
As for soaps: Dr. Bronners is good, but only works well in soft water. It doesn't rinse out well in hard water. Dreadlockshampoo.com offer a wide selection of liquid and bar soaps that work well in any water type. I swear by the Baking soda/apple cider vinegar wash. As do many other here. It's a no-touch wash You just pour on the BS mixture. Let it sit for 10 minutes. Then rinse it off. The pour on the ACV mix and rinse it right away. You don't have to nor should you scrub your head at all. You can add whatever oils you want for scent.
All the other soaps you need to scrub your scalp. DON'T wash your hair itself. Just scrub your scalp and rinse it out. As it rinses, it'll run through your hair cleaning it