Yes, next potency up and wait. And if you read Hahnemann's quotes well, then you can understand that indeed there will be a medicinal disease, which will be very hard t cure. Kent gives an example in the 'lectures on the philosophy' that you then may end up with taking antidote for the rest of your life!
So you take the 30C and wait. when improvement stops, ask again. You may need a modified 30C, or you may need to go higher. All is dependent on how far the recovery has gone.