Dc6 needs multiple changes due to accidents and he pees on his bed most mornings ( asd)
Firstly is there a reason DC6 isn't in pull ups? If they can't/won't wear them then I would be looking into bedmats etc to try and reduce the amount of bedding needing daily washing.
Toddler enjoys wet and muddy play so needs a few changes a day
Puddlesuit/waterproof pants and wellies etc will protect their clothes and if they're just dirty but not wet then they can stay in the same clothes all day.
Dd school clothes and home clothes both dirty
If DDs uniform is already dirty, why doesn't she just stay in the dirty uniform till bedtime? Usually the point of changing is to keep uniform clean for the following day, but if its already dirty then there's no point in changing to make extra clothes dirty.
My DD has fresh school shirts every day but her skirt/trousers and jumper will usually do her a full week (Yr7 now but was the same all the way through primary), so if she gets home from school and they are clean then she just changes into a pair of leggings and leaves her school shirt on. If her skirt/trousers are dirty then she just stays in them till bedtime since they're going in the wash anyway.
dh work clothing and home clothing
Me a couple aday
Does he work in a manual job requiring a full change of work clothes daily? If not then surely it is another case of fresh shirts daily but trousers/jumpers can do a few days? Same with the home clothes - if you both are only sitting around in them for a few hours then surely they can easily do a few days before needing to be washed?