The past June I got my physics degree and because I was working on an important research project on graphenes and had some unexpected results, I wasn't sure If I would finish it on time. Thus, I made my applications for master in the summer and got accepted in Utrecht university for the theoretical physics master (my intention is to follow the path of theoretical condensed matter with computer simulations). The master is starting next in September next year and I will be working till that time (non-physics related job). My problem is I keep forgetting things I learned in my bachelor and it's so frustrating.Is this normal? My plan is to read classical mechanics/electrodynamics and quantum theory till next September and maybe also prepare myself for quantum field theory and quantum statistical theory. Any suggestions are welcome :) .