extra hot day?
after topping, did you fertilize? with less plant material you need less nutes immediately afterward.
anyway, i'd wait and see. Def don't add anything without knowing for sure.
if top 1" is dry, saturate it and repeat.. looks like it's trying to conserve moisture possibly a little beginnign of "clawing" (overabundance of nutes)
I think sticking to water only irrigation for an extra cycle would be all you need.. could be wrong. Since you re-potted into supersoil, you may want to stick to it even longer until you see a slight yellowing near bottom.