Inform the teacher of the remedial class, inform that the next course will not be continued, and notify in advance.

If you decide not to continue the next class, you should inform the tutor in advance and tell yourself. If you need to negotiate an agreement that the teacher will not continue the class after negotiation, you can inform the teacher in advance.

Whether to continue the class or not depends entirely on your own choice. As a teacher, you can't interfere, just tell me in advance.