I know the recommendation is to be ever present in the early days but most people seem to build to 4 hours as time goes on. I always took it to mean in one lump but when I look at our day it goes like this, there is the school run, - approx 30 mins, then on the days I go to gym i am back in for about hour then out again for 1 hr - 90 mins. There will be food shopping once a week - approx 90 mins, or a trip to town for something - possibly 2.5 hours, then a school run about 30 mins again. Obvs all of these would not occur every day but school run will and i would generally be out for 1 - 2 hours at one point most days. I can tweak this but do you think that sounds OK? I can take dog to town of course and school run some days. Surely dog owners do not stay chained to their homes all day every day. If I was out accumatively for 4 hours in any one day with the bulk of the time indoors would that work for a dog?