A&P 1 and A&P 2 at the same time

I’ve already taken most of my prerequisites besides the A&P classes. Some people said that taking 1 & 2 at the same time would destroy me, is it really that bad?

At first i planned to take 1 & 2 during the same semester then take micro bio the next semester. then i decided i would just take a & p 1 first semester then a & p 2 second semester then do micro bio over the summer but i would be too late to get into the nursing program in the fall if i take micro bio over the summer.