u/Mike11119

I am currently adding drywall to make a closet under my stairwell that was previously just framing. I wanted to add a little cutout between studs to maximize my space (storing a vaccum and some small shleves above it. Pictures here with the framing I added to support the drywall.

My question is can i cut out that small portion of the sill plate between studs? It is anchored to the concrete slab on both sides (but not where I want to cut). I could also add some screws to further connect it to the other sill plates if that would help at all.