Sprocket

Good evening,

I apologize now because I'm new to quilting and don't know all the term.
Also, I'm sure you see that english is not my language.

I'm new to sewing in general and decided to make a quilt.
It's been hard but it coming well and I'm very happy with it.

I'm no putting together the top, back and stuffing.
I only notice after 3 hour drive to the store that my stuffing (100% cotton) says max between stitches is 4".

My quilt is made of 9" and 4 1/2" blocks.
Do anyone think it would be ok to just stitch at 4 1/2"?
I have wash/dried the cotton already so I think it has shrunk.
What would be the worse case if I don't do 4" or less?

Merci for your comment!