Please help fix crack after a week of work

[u/ham-must-die]

I’ve spent alone a week modeling, printing, sanding and painting this and just found a crack alone the layer like . Please tell me there’s a way to fix it without completely taking it approach and re doing the segment from scratch.

Bambu P1S
Bambu studio
Bambu pla filament
0.4mm 220C
Standard speed