SAT Subject Tests preperation really need help

<p>So, I am a junior who will be taking the SAT in May and planning on taking at least 2-3 subject tests in june. Possibly, I will take one of those 3 in March depending on my workload. So here is the list of subject tests that I need to take:
Biology M, Physics, Chemistry, Math Level 2. I need to take at least 2 from this list
I know I have more than 3 months till June but I am also studying for the SAT. I have taken Honors Chemistry and I am currently enrolled in Honors Physics. However, through the questions that I have done from the collegeboard website, it is clear that I need to study for these tests.
Should I take one of these during March or study for all 3 at june? If I should take a test in March, which one should I take and for how long should I study?
Which one of the aformentioned subject tests are the easiest to study?</p>