Hi and welcome to Knitting Help!
I don't have this pattern
so I don't know what the stitch numbers are or what kind of decreases you're doing (possibly a double decrease?). If you have k6, dec, k6, dec,
for example, you would work k4, dec, k4, dec
on the next decrease row and k2, dec, k2, dec on the following decrease row. Often these decrease row are every other row with a plain row between but just do whatever row 2 of your pattern reads.