So, no practice on Friday, so I did half an hour on Sunday, just standing up to Prasarita Padottanasana, then the three seated finishing poses. Similarly, I did half an hour yesterday morning, but no standing, just straight from suryas to some faffing about on the floor, and then an abridged set of closing - backbends, simple shoulderstand, and the first headstand for a couple of weeks, finally. Such an adrenaline rush.
So this is one of the poses that's really affected by regularity, or lack of, in my practice. When I've been doing fuller practices every day, I can get my head to the floor in A and D, and H can easily get my hands to the floor in C, then turning them before guiding them down again. But with little practice going on, I feel miles away from the floor - I could take my legs further out, but somehow that feels like cheating!
All the usual standing pose stuff applies - avoiding overextending my knees, keeping my feet equally grounded (within each foot, more than between), keeping my shoulders relaxed and my head in line with my spine. I used to get a lot of discomfort on the outside of my ankles and shins, but I think this has faded as I've strengthened up. Still happens in led sometimes.
No practice yet today, hoping I'll drag myself to mysore later today.
My lack of energy is a bit chicken and egg right now - I feel more tired the less I do, and the less I do the less I want to do. I do feel a little better for acknowledging that I do just feel miserable, and physically sick for much of the time right now, and I can stop kind of waiting for it to lift. It's probably not going to for a while, so the answer is to just get on with it.