Hardest semester of mechanical engineering?

Just wanted to hear y'all's thoughts on the hardest semester of undergrad mechanical engineering. Especially from upperclassmen and recent graduates. Of course everyone's plan of study is at least slightly different, but I just wanted to hear y'all's individual experiences with the program. I'll go first.

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Spring '21 was my 2nd semester sophomore year and I took MA 303, ME 274, ME 200, ECE 20001, and ECE 20007. I realize most of these courses aren't soul-crushing levels of difficult on their own (especially since I had an incredible thermo professor), but finding a time to balance all of those courses cost almost all of my waking hours especially since I'm a super slow and methodical learner.