Novice Knitter Needs Help with Instructions!

[leswenger]

Hello, I am making my first sleeveless turtleneck and have come to a part in the instructions where I am completely stumped. I have completed the back and have completed the front now I am at the "shape neck" I have 60 stiches on my needle and have continued as follows: dec row:s/1 kwise, k1, p1, k7, ssk, k1, place next 22 sts onto holder. I've completed up to this point, now is where I don't know how to proceed: Attach a separate strand of yarn to other side and work rem sts as follows: K1, k2tog, k7, p1, k2 working shoulders separately and AT THE SAME TIME, rep dec row every other row four times more.... Do I use another needle for each side and do them separately, meaning using a total of four needles? I appreciate any help I can get. Thank you.