As achandra says, every stroke is different. I get very tired and have to be careful not to overdo things, but I'm retired and my only domestic duties are self-imposed ones to do the washing up, light maintenance and help with the laundry. I'm not allowed to even drive yet so my total time can be spent in achieving recovery! I'm quite spoilt! I take my hat off to you having to cope with a couple of active, demanding schoolboys, as well as cooking, housework and everything else. Can't give you any advice but I can give you my respect.
Regards
Deigh