Hi there,
First of all, you can't remember everything so don't beat yourself up trying to do this.
Second: Second-year has some good reviews of first-year material built in. Path is good histo review; Pharm is good neuro and physio review etc.
Third: You cannot review what you have not learned in the first place. Concentrate on your present classes and leave the reviewing for the end of second year. You will have plenty of time and will be sick or reviewing by the time you need to take USMLE Step I
Fourth: Find some ways of maximizing your concentration. I found that my attention span was about 50 minutes. I took a kitchen timer and set it for 50 minutes. When that time was up, I took a 10-minute break. On my break, I walked around, drank some water, put in some laundry etc. When I got back to my studies, I was refreshed and ready to focus again. If something was bothering me, I would write it down and think about it on my break or while I was exercising.
Fifth: Do something aerobic at least 30 minutes three to four times each week. Walk steps, power walk in the evening after class, go to the gym and hit the treadmill, swim or do the elliptical trainer. Do something physical and do it regularly. The discipline really helps you focus on your studies. You can even make study tapes and listen to them while you work out or just take that time and let your mind wander.
Last: Take at least one day next weekend and do not study. Up your study during the week so that you can take the time without feeling guilty. Take that day and do something fun and not related to medicine. Go to the movies, drive out of town to some tourist attraction, go for a long hike in the woods etc. In short, take a 24-hour vacation to make up for the one that you did not get during the summer.
It is easy to feel overwhelmed at the beginning of second year. The coursework is more intense and there is more of it. Do realize that lots of this work is going to be building on the foundation that you set last year so do not worry that you are forgetting last year's materials.
Even those of us who made a conscious effort to "data dump" at the end of first year found that we remember far more that we think.
Good luck!
njbmd 🙂