Help with shaping neck on sweater

I am starting the shaping on the neck of a mens sweater. I have done the first and 2nd row
Row 1: K2, sl, K1, psso, 14, turn
Row 2: P2 tog, purl to end
I now have 18 stitches to continue working on.
Pattern reads. Dec one st as before at armhole edge in next row, then in every foll alt row (8 times), AT SAME TIME dec on st at neck edge in next row, then in every foll row (3 times, the in every foll 4th row (2 times). 3 stitches remain.

Can I ssume that ‘Dec 1 as before’ means as per Row 1 and does this mean that I also do the K2 at the start of the row?)

For ref pattern is the Patons from Men’s Classic knits ‘Jumper with Raglan Sleeves’
Any help would be much appreciated! Thank you.

Yes, k2, then sl, k1, psso for the decrease.