Some of us, me included, need to ease ourselves into the day. I would try and take your time getting up, have a breakfast with some protein and walk around a bit to get the blood flowing. Knowing that it will pass after a couple of hours makes it a little easier to accept. Also I would try and keep your eating times regular, even if you don't feel hungry because I think it's important to train your brain back into regular eating and sleeping habits. Sleeping is a good thing for healing, suffering from PCS insomnia myself I know how frustrating it can be, I know it's held my recovery back.