Help me save this tank, I started with too many stitches

I am about two weeks in to crocheting the front panel of this tank and now realizing it’s way too wide for me. I think it’s because I used a 4mm hook rather than 3.25. I have like 5” of the 13” height done and really don’t want to frog but I can’t figure out a solution.

Can I reduce so the hip area is a little wider, making the finished product more tunic shaped?

Should I make the back panel narrower to account for the front panel being too wide?

Can I connect the two halves with some slack on the sides, like we do when sewing?

Here’s the pattern: https://www.premieryarns.com/collections/crochet-patterns/products/canna-lilies-tank