Hi there, I did not take Microbiology over the summer, but I did take A&P in a six week summer session. I think that doing any of your lab sciences in a consolidated format is going to be intense, but if it were impossible, the school would likely not offer them. In my experience with A&P, I actually really liked taking the class in the summer because I was always in the zone. Yes, there will be work/family commitments going on, but (hopefully!) it's the only class you're taking, so you can devote all of your study time to that course. It's a full time job, but you can do it! Good luck!