hmmm....if your prepared to take the plunge and pay for a new nut to be fitted if you make a mess off it then yes.
If you use one of the wound strings held taught and use it as a file (steady filing motion) that will probably widen the desired slots. Be carefull to gauge it right though ie. DONT use the wound E string to widen the top E slot 😲 and DONT go too deep, its more about the width of the slot not the depth.
*I hold no responsibility for your actions/mistakes*