My 2 are 11 months apart and we rely on family to help out a lot. My little boy goes to nursery 1 day a week which helps massively too.
Mine are 17 months apart but we don't have any family around really. I lean heavily on my partner, especially with our toddler right after giving birth. Our two don't do daycare either and I found a job where I could work evenings from home but that's ending soon.. It's possible, but you didn't mention if you're single or not.
Does dad work at all?