I'm a dad, work full time, and already have one degree in an unrelated subject. I'm now knocking down pre-reqs for Nursing, while my wife is currently going back to school FT to complete her Masters and become a NP.
Many years ago, we were dating when she was in Nursing school. Many of our dates included her studying and doing care plans
at my house while I was in another room watching TV. I kind of knew way back then how tuff these Nursing classes were just by watching the many hours she spent studying and doing HW. My classes back then were nowhere near as challenging.
Now that I'm actually taking some of the classes she did back then, I know how hard classes like A&P can be, and how much studying is required to make an "A". Lets just say that I have gained even more appreciation for what she did back then. Now that she's in school to complete her NP, I can tell you that's tough sledding as well.
I think your husband will be able to see how hard these classes are when you get started. If not, show him these threads so he can read for himself how thousands of people agree, it takes a lot of midnight oil to pass Nursing.