Is 6 AP Classes too much?

My son is currently in senior year and taking 6 AP classes. He took 1 AP sophomore year and 3 junior year. I thought he was crazy signing up for this schedule but he’s handling it nicely, straight A’s so far. He’s taking:

AP calc AB
AP Spanish
AP Physics 2
AP Euro
AP Eng Lit
AP Chem
A mentoring class and gym (needed some type of break).

So, it’s possible but it is a lot of work You’ll probably have a better idea once your closer to senior year.