Likely yes.

Will is required to create and maintain strong constructs, but the constructs are only as good as one’s knowledge and creativity. There’s much more to bring a Lantern than just will.

What even is Absolute Will?

I mean yeah... that's like the entire point of the ring

Is it anything like “full potential”?

Absolute will is having infinite will you have complete will over your body like you can tell your self to get over your crush and it will work