Wondering If I Should Start Over 🤔

 So this is the current preemie hat I am working on. It seems like it’s going to be too big. I’m wondering if I need to frog it and just do DC instead of HDC rows. 

Here it is in comparison to a finished hat that I actually followed a pattern for. The Pink/Black hat is slightly larger even though the crown diameter is the same.  

Is it because I did HDC instead of DC?  The yarn is slightly thinner too, but that’s how the Yarn Bee Soft Secret is. It’s kinda like Caron Simply Soft.  I think I will frog it and start over following the pattern I have instead of trying to do it on my own. I should know better, trying to figure out a pattern on my own doesn’t always work. 😂