I'm very new to Blender and modelling in general, so i was following this tutorial on how to make a Low Poly Character (https://youtu.be/Ljl_QFs9xhE?t=607), at 10:04 he extrudes the vertices down and then scales it inwards to make the shape of a waist, but when i do it, the mirrored parts separate like this:
What am i doing wrong here? I'd appreciate very much if someone could help me.