Personally, I started studying with 18 days left. (i wrote the PCAT just prior so I only had to slightly review physics and minor parts of ochem) I winged AAMC 3 and was at 29. (VR I got 7 LOL) So.. You'll be fine if you know your stuff. Don't force yourself to do practice problems... Just understand how to use and abuse the formulas. Honestly, in the PS section I have no idea what the question is asking sometimes (PS section) but you can infer information from the passage even if you don't understand 100% (I found that I can get the questions right 90% of the time still unless I misread.. which seems to happen sometimes). The practice exam passages explain the harder, less seen physics stuff (seemed like the first year stuff like fluids, waves, and stuff like that) but the kinematics, forces, conservation of energy/momentum you definitely need to know like your eyelids.
You can do it, of course, depending on your background knowledge.