We waited a year between dogs, but have 4 adults living here working different shifts. We spent a lot of time with Kaz, group effort, this teamwork naturally transitioned to Gus. Schedules, notes, communication between what I guess you would call at home shifts is key. It does make for a busy life, but busy in a fun way.
Kaz is nearly a year & 8 months, barely past puppy. Gus is nearly 8 months, they are both pretty good for their age, but do have their moments. It helps that everyone is consistent in how & when they do things, daughter is a schedule Nazi. It really does take a group effort, and we would not have even considered another pup if the group didn't work so well together raising Kaz.
I figure we have another year to do of intensive communication, that is reason enough for my daughter to buy 4 calanders & a couple of planners.