We have all had those days where we don't want to get dressed, don't be hard on yourself this is a very tough time.
My exH income also varies greatly from month to month, but my monthly support is constant through out each year - its based on his yearly income which we look at each year. I then get the standard amount for New York state 27%. Child support is not based on your expenses only on his income.
Stay strong, you are so blessed
---- M 39 H 35 D5,D4 M 4 T 9 ILYBNILWY 5/18/11 Left 7/11/11 Divorced 12/1/13