Just keep checking back. I signed up for our culinary classes on Splendor (which is sailing this November-December) on November 11, 2023!
We usually take 3 or more depending on the length of the cruise and if we haven't taken that class. Last month on the Explorer the instructor was so scattered and not very good (she was a guest instructor) that I canceled our other class. She didn't have the right utensils, and she would bang on the pot (which Chef John Stephano had said to never do as it can damage the pot).
In November I plan to find out who the instructor is right away and depending I may cancel the 4 we have booked.
We've enjoyed all the rest of the instructors though.