Hang in there, it's not an easy venture but you guys will be ok. Just keep coming here for info and support and you'll be ahead of the game. Your attitude as a caregiver is great, with your help your husband is in great hands. Glad he found a doctor he is comfortable with, that will make a big difference.
My mom did the 6 weeks of chemo as opposed to the 3 so I can't speak to the side effects on that. Many people here have though, so I'm sure they will be able to help.
Best of luck as you both move forward!