To reduce your laundry load you have GOT to look at the supply stream. Either you just say 'I am OCD' and accept this insane level of hamster-wheel life, or you have to challenge yourself a little bit.
I change bedding fortnightly. Admittedly we used to move the top sheet to the bottom weekly in our house when I was growing up but in general fortnightly was enough. Weekly only became standard once home washing machines were invented - the work expanding to fill the time available. Nobody will die if you move to fortnightly bedding change - adults one week, children the next? Obviously different if your 5 year old is not completely dry at night but for the rest?
Flannels need to be washed every time, I wouldn't change that, but towels don't, they really don't (depending on what you are doing with them). An ordinary shower, a quick dry, hanging up to air, surely that can go for three or at least two times?? Alternatively encourage the strip wash - a single flannel and two half basins of water and I can wash face, underarms, bottom, feet, with the result that I don't have a towel to put in the wash.
Get tough(er?) about use of big napkins for meals and aprons for messy tasks, and invest some time in working on your family's neatness of eating, with a view to clothes being put in the wash less often. Consider instituting a rule whereby people change out of work or school clothes as soon as they get home - provided they don't then get into a new set of home clothes that they promptly put in the wash - encourage a few days' use out of these.
Rediscover undershirts? When DH was wearing shirts to work he had white t-shirts and would change those daily, with the result that his shirts could go three days without a wash.
I found on a recent thread that some people get into fresh nightclothes every night
with the results that they will launder fourteen complete outfits per person per week
- if this is you, don't.