I have been studying for the math subject GRE for a couple months now and I still get like 20-30 problems wrong on every practice test I do. I legitimately do not understand how people solve these problems in 2.5 minutes when they take me around 5 and I am just struggling under the pressure. How the fuck can I get better? It seems as though every single test, no matter how many calculus problems I solve or what I review, comes up with something new to trip me up. should I just accept mediocrity and resign myself to the fact that I'll get rejected from grad school, again?