Congratulations on your sweet arrival
You really have been doing all you can so far.
When I was engorged, I really loved a hot shower. If the water hitting your breasts feels too intense, you can cup the water in your hands and let it gently run over them or wet a wash cloth with the warm water and let them lay on your breasts.
I also felt relief by expressing a TINY bit when LO was asleep and I needed relief. You can find youtube videos on how to hand express. Don't overdo the hand expressing because it may signal to your body to make MORE milk - which will obviously perpetuate your problem
You can definitely try waking your LO to nurse. I woke my LO for the first month because of engorgement, lol. If your baby has a hard time waking for nursing sessions you can try a cool cloth on her forehead or feet, tickling her belly, tickling her feet...you get the idea
(oh my I really am missing those days right now...baby fever!)
You may read online to use cabbage leaves on your breasts. DO NOT do this if you want to continue breastfeeding. Cabbage leaves will most definitely help you to DRY up. Use with caution.
Keep up with what you're doing. Your breasts/body need more than a few days (I personally needed a few weeks!) for my supply to level out and my engorgement to ease up.