First off, you don't need to wait. At worst your hair will look a little messy.
Second, my ex had to go to the courthouse to deal with a ticket years ago, and when he got there, he never had to go before a judge. They just had him pay the fine at the front desk area. It ended up getting lowered a fraction of what the ticket fine said. So, my opinion is...you should go. It's highly unlikely they'll actually have you see a judge!
Why start completely over? I'd just comb out the huge ones if it were me. It's worth keeping the ones that aren't causing any issues. Having some hair undreaded wont look bad since that's how it is during the natural journey anyway. It's obviously your choice, but I'd think about it a bit before combing all of them out.
Welcome! I'm about a year in since I stopped brushing. I added t&r to the top but left the rest to nature. So we are in a similar boat. I started my journey with pretty short hair though. Enjoy the ride! The natural ones are fun to watch progress!
I started with 5 inches on top and only 3 inches on the sides and back. It's worth just being patient! Don't worry about messy hair, its part of the process at all lengths! Messy hair is awesome!
My hair is naturally extremely dry. I wouldn't stress too much. Vicky's shampoo bars helped me a lot, but I've been using her bars exclusively for almost a year now. My hair still locks up easily using those shampoo bars because I have such dry hair!
Maybe keep using the bars in the front and liquid in the back. Have you considered hair thinning from genetics? It could be the culprit, but I don't know you. 
I have to concur with soaring eagle. Let your hair naturally section first. I know from experience that forced sections will only cause issues later.
After your hair has sectioned, you can either do nothing but wash as usual and let your hair dread up on its own, or gently use the twist and rip method.
Back combing is very damaging and doesn't hold knots as well as t&r might. But all starter methods will loosen and some or all can come partly/completely undone.
You can find embroidery thread at Walmart or any craft store. It is really cheap, too.
Yah, definitely don't cut your hair! Just stop combing, buy some dread safe shampoo (or use BS/ACV), and let nature run its course.
I have baby dreads and use the shampoo bars, not the liquid. I don't have any issues, and it doesn't interfere with the locking process for me at all. I am always seeing progress after every wash. I think it depends on different factors for different people.
My hair is naturally verrrry dry and frizzy, so I need the moisture that the bars provide. I don't care if it slightly slows the progress (but it doesn't seem to at all). I don't want my dreads breaking off in the future when they are mature!
Try the liquid, though. It might be better for your dreads and hair type.
