Help with choosing SL or HL

I’m a rising IB student, and I’m debating which subjects to take at HL or SL. In college, I’m planning on studying neuroscience. I love STEM subjects (math, biology, and chemistry), but I also have a deep love for history—I’ve even won a few Olympiads in it.

Here’s the combination I’m considering: • HL Chemistry • HL Biology • HL Math • HL History

Would this combination be too rigorous? I’m worried about balancing the workload, and I’m rethinking whether I should move History to SL instead, or move another subject to SL?

For those of you currently in IB or who’ve taken similar subjects, what are your thoughts? Any advice would be much appreciated!