I’m going to be the outlier here.
STEM majors at most colleges, esp ABET Engineering, do not require foreign language as part of the college graduation requirement.
My oldest was an Engineering major and behind is freshman year because he did not have comp sci experience.
I recommend taking a summer community college language course or CLEP exam. My daughter’s friend did 2 years HS Spanish and a semester of CC Spanish in order to apply to colleges. She is currently a junior at Pitt.
I also recommend reaching out to colleges he wishes to apply and speak with admissions. Pitt admissions blessed DDs friend’s plan before she began her course.