this information is from v2, but it might be quite similar. I dont know how long it takes to get each thing, but in all, to get an adult it takes about 8 real time days.
These are unpaused times. For example, if your egg turns into a baby at 9:00 it will normally turn into a toddler at about 10:00. However, if it turns into a baby at 9:00, then you pause it from 9:30 to 9:45 (about 15 minutes paused), it won't turn into a toddler until about 10:15 (about 15 minutes later than normal).