I know there are loads of people on here with much huger issues.. but I am struggling a bit... it's the conjunction of ds's and dh's needs. Ds is doing really well, but still needs lots of support, dh is going down hill... 
(degenerative neuro muscular illness)
I just put dinner on the table and dh falls in the kitchen,so much pain and dis-orientation can't tell me what he wants/needs, so am running in and out between him and ds and watching the dinner get cold on the table. he needed to stay down, so covered with a blanket, gobbled my dinner, re-assured ds and put dh's tea in oven... dragged dh to better position, and her crawled into lounge, but "needed quiet"...
ds is not 'quiet' and we are in the bed time routine so don't want to de-camp to other room with no TV...
DH gets up, starts tea, then has a muscle spasm that throws him off the chair.... 
I get away for a few days every so often, (I know I am lucky to get that), and I can forsee the time soon when dh is not safe to be left with ds,,, even with all the support and backup I organise to go away, 
Sorry, just having a whinge, will tell self to buck up, 