Need help reading the patterns

I’ve started these booties.
i 've done till Work 2 Tog across …

and now i m confused in Cut 12" Tail … Weave through the remaining 15 stitches … twice … tug

can some one explain me what does it mean by weave through the remaining 15 stitch… how to do that.
please healp.

Thread the tail through the stitches like a drawstring.