Narrow shoulder adjustment help – Colette Wren pattern Sewing Machines Parts and Sales in Los Angeles

Hello fellow sewists!

I’m about to do my first-ever narrow shoulder adjustment (just starting to get into proper pattern alterations) and have a question about how to do this with Colette Patterns’ Wren dress.

This pattern has a wrap effect on the bodice that requires a neckband piece to be attached to each front bodice piece. You can see my pattern pieces here, in the order of front bodice, neckband and back bodice.

My question is, when I do a narrow shoulder adjustment, would I adjust the neckband piece in addition to the front and back bodice pieces? If so, how would I go about doing this? Or should I just leave the neckband piece alone?

Thank you in advance for any help you can provide!