It's good that you're thinking about this ahead of time! Big pat on the back for that

I'm another one who found it really hard. With my DD I was only mildly sick from 6-10 weeks and then I felt great for the rest of the pregnancy. I stupidly assumed that it would be the same next time and when it wasn't (I was really sick from 6-14 weeks) it was a rude shock.
DH basically took care of our DD at home while my main responsibility was to keep getting my butt out of bed or off the couch and go to work. Where I was pretty useless anyway LOL.
It's hard and my suggestion is to make sure you have some strategies in place to make it easier beforehand. Line up all the help you can get.