College freshman burnt out - is this normal?

<p>S1 is on a semester system and all of his courses have been in sophomore science and math classes, both which involve alot of homework. He did have a very difficult senior year in high school (all AP and engineering classes) so he knows how to work hard and he seems like he is always studying when I talk to him. He was home for a funeral for two days this week and when I looked at what he had to do, I was overwhelmed. He only has one more month until summer break. I’m hoping that after a bit of a break his enthusiasm for school will be back.</p>