NEED HELP!

I am trying to figure out how to re-interperate the pattern below to fit the following.

So I cast on 48 sts (12 stitches on 4 needles) for my hat (its a child's hat/toddler hat), I then knit 10 rounds of K2 P2 ribbing. Now I am trying to figure out how to adjust the following to fit my pattern. I know that this is a decrease pattern, and that is another thing that I am not sure of. Because my hat is a toddler hat, should I just start to decrease? BTW I am using bulky yarn, so a little yarn goes a long way. That is another reason why maybe its ok to start to decrease.

R1.*p9, k1, k2tog, k2*; rep. from * to *.
R2.*p9, k4*; rep. from * to *.
R3.*p9, k2tog, k2*; rep. from * to *.
R4.*p9, k3*; rep. from * to *.
R5.*p9, k2tog, k1*; rep. from * to *.
R6.*p9, k2*; rep. from * to *.
R7.*p7, p2tog, k2*; rep. from * to *.
R8.*p8, k2*; rep. from * to *.
R9.*p6, p2tog, k2*; rep. from * to *.
R10.*p7, k2*; rep from * to *.
R11.*p5, p2tog, k2*; rep from * to *.
R12.*p6, k2*; rep. from * to *.
R13.*p4, p2tog, k2*; rep. from * to *.
R14.*p5, k2*; rep. from * to *.
R15.*p3, p2tog, k2*; rep. from * to *.
R16.*p4, k2*; rep. from * to *.
R17.*p2, p2tog, k2*; rep. from * to *.
R18.*p3, k2*; rep. from * to *.
R19.*p1, p2tog, k2*; rep. from * to *.
R20.*p2, k2*; rep. from * to *.
R21.*p2tog, k2*; rep. from * to *.
R22.*p1, k2*; rep. from * to *.
R23.*k2tog, k1*; rep. from * to *.