Please could someone help me with this next stage?? It says to now shape neck and continue in patt but I don’t know how to do this whilst decreasing?
Please can someone break it down easier for me

You won’t be able to follow the pattern exactly as written. You’ll have to account for the decreased sts. It may mean giving up a pattern repeat at the beginning and end of the row, and working those sts in knit or purl whichever works for your pattern.
The important point is to keep the alignment of the pattern that you’ve established in the earlier rows.

What is the name of your pattern?