Online Grad School & 8 month old

I want to complete an online graduate program that will take 2 years to complete. The only worry I have is I work 30 a week and have a clingy 8 month old. Work isn't the issue, as I have weekends and evenings off. it's the thought of trying to complete homework assignments with an infant. I won't have any help watching my lo as hubby will be at work and we can't afford daycare or a babysitter at the moment. Anyone have experience completing a degree online with an infant? Is it possible/impossible? I regard to classload, I will only be able to complete 2 classes at a time.