Dec stitches then foll 2 alt rows

I do not understand the following: dec 1 stitch at the end of next 3 rows (I did that), then foll 2 alt rows.
So does that mean that I do not dec on next row, but the following row? If so, all of the decreases will be on same side.

Thanks for your help!

You’ve got it. The decreases will probably be on the right side when you do them.

What is it you’re making? Is it possible that the instructions tell you to decrease at each end?

Thanks GG!

Vest jacket. I already decreased at ends.