I would want 12 months off, but be open to 6 months if 12 was not doable.
My reality is that childcare was not the best place for my child, but there was no way around it. I can work from home now, but couldn't back then. When people say it is not detrimental to kids, that isn't entirely true. Many people cannot work because their kids cannot attend childcare. It might be ok for your bubba, but just be aware that it is not ok for some.