don't bother having anyone properly section it..just don't comb for a few days to a week wash as normal with a dread shampoo and it will section itself like it wants to (forced sections often try to split into natural sections at the roots anyway)
then you have a choice
once its sectioned you can either let it dread itself (your hair will do that beautifully and quickly) or you can twist and rip the sections that formed naturally
id recommend just letting it dread but nothing wrong with twist and rip either
but ultimately your going to want at least 3-4 times as many dreads as you had
that s if you want them easy to care for
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My new book Ban The Taboo Vol 1