Rag Doll Sleeping Bag

I've been making this free 18 inch doll sleeping bag pattern found here for some time now.

What I realized this year is there is a specific way to join the top of the sleeping bag or it is too tight for the 18 inch doll to slide easily in and out. This is the second year the Rag Doll has inherited a sleeping bag made with a K hook instead of an I because the opening was too small for the larger doll.

I recently had to frog a large section of another one when I realized I was headed in the same direction with one made for the Our Generation Boy. I think I've identified how to verify it is joined correctly but I've also decided not to continue with the pattern until I've tried it on because it isn't worth having to pull it all out again.