I'm making this and am on row 7. It is still really small. How big should it be when you are ready to begin row 7? I'm using the size of crochet hook that it says in that tutorial and following the tutorial exactly as it says.
I don't think that mine really started to grow until I was past row 17. I restarted it a few times because of mistakes. Keep at it! It will come along
Such a fun pattern when you finally figure it out.
I used a 3.75mm Hook and Fingering weight yarn with mine. I hope that is somewhat helpful