I've just checked our calendar and our little porkers have each gained 1.5kg (just over 3lb) in six weeks and they're not fat - so three meals a day isn't hurting them

We work all day too, so they get their 'lunch' at about 4.30pm, and a smaller dinner about 8.30pm.

Kong makes a ball with bone-shaped holes in it so you can put in cheese bits, or dry food or whatever, and the dog rolls it around the ground to get the treats to fall out. Maybe one of those could give her a few calories during the day???