Struggling in Honors Precalculus after being in regular math

Yes, he has biology, chemistry, and finishing up AP Physics: Mechanics. He has an IEP for extra time but the teacher fears that the AP Calculus may be too fast pace for him (imagine college will be harder) - is it true that colleges don’t think of APES as a “true” science class? I believe colleges may give social science equivalents for AP scores… it doesn’t matter much since they may take the classes again in college and it’s mainly giving them the exposure and ability to do better at the college level…