How much longer do i have to wait?

I had some nice twist and rip dreads before and used to go to this site alot, but i ended up catching lice at this moving company i worked at and had to shave them off. It's been a few months since then and my hair has grown to about an inch and a half or so since then, so im just wondering does any one know approximately how long hair needs to be before itll start to dread? its started to tangle a little bit but not enough to stay (doing them natural this time around). Can anyone tell me this so i know about how much longer ill need to wait to have my locs back?

updated by @ethon-obrien: 01/13/15 10:03:52PM

u didnt need to shave! we coulda saved em

well tyopicaly it dreads at 6 in

but since u star5ted short and had dreads b4 it may dread shorter..as lil as 4

thats assuming u dont have africanish hair in that case an inch to 2 is enough

biotin daily over 10,000 mg will drasticly increaee growrth in the next 3 months i mean after 3 it double4s or tripples growth

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My new book Ban The Taboo Vol 1