2 year old & eyebrow scar

How long should it take for a small eyebrow scar to heal and not be noticeable? My 2 year old babe cut his eyebrow on a sharp file cabinet corner 😫 it happened November 1st.

It’s a bit pink still so I know it’s still healing. I’ve been putting Bio Oil on it ever since the scab went away. I keep beating myself up it happened and I definitely notice the spot on his brow.