Hiya, I am diagnosed as having ME but have several other neurological conditions running along with it.
Some thoughts if you have the energy to do a bit of further reading but also adding links so that this might help others as well.
Your children are “very young” - entertaining them when needed with as little energy as possible - www.babycenter.com/0_40-ways-to-entertain-your-kids-while-lying-down_10350158.bc
thehealthsessions.com/30-ways-to-entertain-an-active-toddler-when-youre-chronically-ill/
thehealthsessions.com/parenting-with-chronic-illness-how-to-take-care-of-your-baby-and-yourself/#more-1639
Loads of info on this site including an e-course if that's something which takes your interest - www.cfidsselfhelp.org/library or this one for info www.verywellhealth.com/fibromyalgia-and-chronic-fatigue-4014724
Adapt this list to whatever suits best for you - thehealthsessions.com/28-fun-things-to-do-when-youre-bored-and-sick-at-home/
I went on a local arthritis group course and they used this book as a guide www.amazon.co.uk/gp/product/1936693771/ref=ox_sc_act_title_1?smid=A3P5ROKL5A1OLE&psc=1&tag=mumsnetforum-21
As you are currently working (although signed off) - thehealthsessions.com/how-to-get-through-your-workday-when-you-feel-exhausted/
About getting things done around the home - thehealthsessions.com/getting-things-done-with-chronic-illness/ and thehealthsessions.com/housekeeping-hacks/
Pacing and how to best manage your energy - thehealthsessions.com/pacing/
If you felt up to doing some exercise, this is entirely up to you and by no means a suggestion that its a cure, it's not (I don’t want anyone to pick me up as saying do some exercises and voila cured) – yoga for cfs - thehealthsessions.com/how-to-start-doing-yoga-in-bed/ so basically some stretches
Things NOT to do - thehealthsessions.com/to-dont-list-for-spoonies/
How to make a healthy dinner when you are tired - thehealthsessions.com/how-to-effortlessly-make-a-healthy-dinner-when-youre-tired/
Recharging your batteries - thehealthsessions.com/mindful-micro-breaks-how-to-recharge-yourself-within-minutes/#more-1371
Also in my own case, my Vit D was 9 so was very low, I spent 18 months on high-level supplementation and am now on a maintenance daily dose and will be long term. I was told the right level was approx 75 so that might give you some indication of things. {flowers} for you.
I used to be at 100 miles an hour before ME, then over the space of 6 months, I literally went to 0. I was advised wrongly to push thru it
I had 3 separate viral illnesses to start with plus one bacterial so 4 infections kicking me at once, had to defer my university place due to illness (I wouldn't have been able to do clinical), 8 weeks of the most intense stress of my life, one car accident, 1 neck and back injury, A sudden withdrawal off antidepressants due to the stressful situation. (the irony is not lost on me re this) Lost 2 family members, had a mini mh breakdown and that 6 months changed a lot for me.
The psych had advised "pushing myself", so I did and made things far worse. A year later I changed GPs and the new one was appaled when he looked at how I was physically and that I had been following wrong advice.
Break absolutely everything down, do a bit, rest for the same amount of time, change from physical to mental jobs, so physical 5 mins folding clothes. rest, mental 5 mins making a list of what needs to be done right now, rest, (clean dishes, clean clothes/bedding shopping list), what can wait list, rest, (bins, lifting/shifting) longer-term list, so rest between each part, so set alarm on phone and don't do anything for a couple of mins -
its harder than it sounds www.donothingfor2minutes.com/
Apologies about all the links but its my easiest way of explaining things