I also work between 9:00 am & 6:00 pm. But having long distance to travel. Need 3 hours traveling back & forth. Only pump during lunch time (for about 45-50 minutes) using Mini Electric. Baby will be 1 year old next week. But I also feed & pump at the same time during early morning (5:30 am) & night (10:00 pm or 11:00 pm).