The no energy thing is tough. It is so much more than simply being tired hey. At my sickest I had loads of neuro symptoms and was being tested for MS, which I am grateful was ruled out.
I was diagnosed when my youngest was about 18 months old, so I haven't had to care for a newborn while sick, but I have read about others who have done it.
I will send you a proper reply tomorrow, but I am doing much, much better than I was. I'm still not fully recovered, but I believe I will be in time. Just a matter of being patient (so hard!).