I had psych in second year. The pharm is high yield for the drugs.
None of the courses in M1 are really that high yield and you can wait until the end of your board prep time to study them. However, that isn't to say that good chunks of them are not important. There are a lot of high yield concepts in anatomy, histology becomes important in recognizing something that is necrotic, inflamed, neoplastic, and other changes in path, crazy congenital defects from embryo that you learn about again in the organ system pathophys, biochemistry that is mixed in with pharmacology and all of the metabolism of pathophys, and neuro which there are a lot of high yield concepts to understand like eye movements, artery distribution to the cortex, and classic neuro lesions.
Since these are high yield concepts, they don't take that much time to go over. Biochemistry is just a pain though as you can't straight memorize all of the pathways in such a short time for board prep. Well you can, but it would require straight memorizing for two days to get the pathways down and would require nothing else which like I said is not the best use of your time.