Would appreciate advice for first-year chemical engineering undergrad
If your only getting 2 hours of sleep, that may be your biggest problem. There is such a thing as over studying, especially when lacking sleep.
I rediscovered this on my midterms last week and the week before. I had two tests on Friday in classes I do very well in, but did horrible on the tests. On Tuesday I had two tests on classes I feel I am lacking in but did extremely well on both. I noticed that I seem to get less sleep as the week progresses and by Friday I am already exhausted. Monday when the tests from Friday were returned I blew through the corrections, I know the material very well and just shot myself in the foot from lack of sleep.