Mild paronychia

Male, 20, 125lbs. I had an infection on my fingernail about 22 days ago, it healed with at home treatments. The infection is now gone. However my finger nails cuticle (i think that's what it's called) looks like it's only now starting to grow back.

I'm wondering if it just takes a long time to grow back and is there a good way to help promote growth? (Picture of both fingernails in comments)