You know what, that is okay, don't be upset about how they look. Lesson learned, now you move on. If wax was used, then it must be removed in order to dread. If wax was not used, then you are on your way much faster. I would not recommend taking them all out as you now have hundreds of broken hairs from the crochet hooking. As your hair grows, the scalp will loosen, yes, they do them too tight at the scalp. You can take a supplement called Biotin, which is found in the vitamin section of drug stores and department stores for under $10. This promotes hair growth, and that you want to loosen up those roots. Take 6000 mcg strength a day and in 3 months you will see plenty of growth at the roots. If you can't find 6000mcg strength, just add up the tablets to equal it, so if you find only 1000mcg-then take 6 tablets a day, it is very safe to take. During the recovery time, you will see the broken hairs start to poke out all over, it will give you a frizzy look, but do not worry, those pieces will be swallowed back into the dread in time.
So what will you do from here on in for healthy dreads??? Wash 2-3 times a week, separate the sections from trying to join onto each other....and that is all. Do no other maintenance, just let them do their own thing. You only got them hooked once, so all is not lost, have faith and patience and you will get the beautiful dreads you envisioned for yourself in time.....peace