2 weeks enough for Physics?

I am sitting for the Math Level 2 and Chemistry SAT Subject Tests on May 2. Now that I have completed the course content and few practice tests in these two subjects, should I also consider to write the Physics test in May? Initially I had planned to write Physics in October. But, if 2 weeks is enough for suitable prep (aiming for 800) then completing all tests in one shot will leave me ample time for other pursuits. I have completed 1 year of IB Physics HL course content in addition to ICSE.

At the same time, I do not want to risk all subjects for physics. What should I do?

Since you have IB Physics experience, I would say that you should be able to pull it off with only 2 weeks of studying time. Just make sure you use plenty of outside studying sources to get a good idea of what to expect - here’s a few websites to help you along the way;

http://www.learnerator.com/sat-subject-test-in-physics
http://www.sparknotes.com/testprep/sat2/

Thanks. Any books I should be using?