How important are the SAT Subject tests??

I’m a senior, I took the august SAT and signed up for the October SAT subject test for math2 and biology (never took any before…). I got a 1490 on general SAT, but I really wanted to get a 1520 or above… The SAT Subject tests are coming up, but I dont feel ready for any of them (at all), especially math. should i just change the test to the general SAT and try to get the score higher? I want to get into UC Berk or UCLA but I don’t know what to major in either. Please help me out :frowning: :frowning: idk what to do and im super stressed out AHH

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