Slightly offbalanced Epoxy-Resin: can it be saved?

Hey, I am asking here because I found no better community.

I am using Epoxy Resin quite a lot simply for glueing stuff together, not the other type for like transparent furniture and all.

I glued something but added too much resin and too little of the "Härter" compound.

So it stays sticky.

I read heat could help but doubt it. Do I need to remove it and apply again?