I have to agree, 4 times daily does seem like a lot.
Bailey is 22 months and he poops once a day and sometimes two, tops.

Chloe is 7 1/2 months and she goes twice a day, morning and late afternoon.

Maybe the food should be changed. A long time ago Bailey was on Eukanuba for a brief period and he pooped MUCH more than he does now after switching to a better food. Chloe has always been on the same food from the time she was weaned over to kibble.