Lovely lady, remind me how old your other 2 DC are? I know it's NOT ideal, but iirc they are of an age where they can do some things for themselves, like make their own packed lunches, do washing up, help with the washing etc.
I am not advocating child slave labour here, but I DO believe that children should be encouraged strongly to participate in household chores.
DS1 doesn't agree with me of course! But I started him young, when he was still wanting to help and be like Mummy - so he empties the dishwasher, and he helps with the laundry in that he hands me pegs for hanging out the washing, and he'll fetch the laundry to the wash-room for me, plus he's very good at making sure his own stuff is in the wash-basket. He's 5.8 - if he can do it, then older DC surely can too.
In my own childhood, I was washing up by the time I was 7, and doing my own laundry by the time I was 12 but had been helping with it up until that time as well.
Look at it like this: it's good training for when they're older. My MIL failed signally to train DH properly in the general domestic chores of the house, and it's a real PITA. I make him wash up and he likes cooking, so we take it in turns to do both of those things; but I have to be completely incapacitated before he'll take a turn at any kind of cleaning and I won't let him near the laundry because he just shoves everything in together. (He does do his own ironing though)
So - do yourself AND your DC a favour and start getting them to help around the house - more, if they already do some stuff - washing up and packed lunches are a good start. :)
Have you got any Lansinoh yet?