Some bootcamps have minimum requirements for students and if those minimums are not met, then the class is cancelled. Take Up Code is not a bootcamp. Classes will go forward with even a single student. You don’t have to worry about signing up for a class only to have it cancelled due to not enough other students.
In fact, you actually benefit more when there’s fewer students. We all know that small class sizes allow instructors to focus more on your needs. The same thing applies to coding classes.