The phrase "already waking up" is correct and usable in written English.
It can be used to describe someone who is in the process of waking up or has begun to wake up earlier than expected.
Example: "I could hear the birds chirping outside, and I knew that I was already waking up before my alarm went off."
Alternatives: "beginning to wake up" or "starting to wake up".
Some organisations are already waking up to this new reality of cancer survivorship, recognising that increasing numbers of their customers will face cancer at some point.
At River Cottage HQ, just outside Axminster in Devon, on this freakily beautiful late September morning, there is not a breath of air in the whole valley to get the wind turbine moving, but the solar panels are already waking up to the early morning sun.
"Wake-up" lights, like this model from Philips, simulate sunrise in your bedroom, gradually increasing in brightness so by the time your alarm goes off you're already waking up naturally.
Viewers can already wake up with Charlie Rose on "CBS This Morning," and wind down their day with his late-night PBS newsmaker interview program.
In sleep, dreamers may have the experience of being able to direct events, of having already woken up, or of returning again and again to a particular place.
Peter O Chotjewitz has called him "a political dandy": "He's the kind of person who shouts 'All aboard!', only to then hop on the train in the opposite direction because it's nice and empty". Florian Illies, literary editor of Die Zeit, on the other hand, thinks his contrarian spirit is simply second nature: "Whenever Germany has started dreaming, Enzensberger has already woken up again.
You already woke up at 1AM on Black Friday to head to Best Buy in your pajama pants.
I already wake up like that.
"We already wake up early because it is so cold".
Professional chefs have already woken up to the huge potential of wild foods, spurting a new industry selling foraged goods to restaurants.
Dexter and Emma have already woken up in her single bed in Edinburgh after a night of hazily remembered college graduation festivities in 1988.
