How is this related to karma? Karma has nothing to do with sleep.
And are you certain karma caused your spine to be curved? It could just be a genetic or birth defect, those aren't always caused by karma, they are often caused because humans are not perfected yet, and/or low vibrational energies.
If your spine problem was not caused by karma, then workings to burn bad karma for it is pointless. You'd be better to do a working to heal your spine. With most workings, go straight to the point, not a round-about route.
Do you mean scoliosis? It doesn't really impede your progress, and it's extremely common. Just do Yoga and strenghten your abs and lower back.
What do you mean by "extremely mild curvature of the spine" exactly? The spine has a curvature to it, no? https://www.qwant.com/?q=the+human+spineExternal ↗
In any case, my advice still stands.
I thought maybe it's karma related because Vindemiatrix is exactly conjunct my 1st house cusp, and my sun is both debilitated and afflicted in the 1st house, which apparently can result in scoliosis.
The sleep was just a bonus effect I was looking for lol, but my spine is kind of messed up.
When I focus on my chakras they're always wonky and not flowing properly unless I contort myself into a specific position.
It's either scoliosis or just bad posture habit alignment - I don't know. It wasn't like this always, but it's messing everything up. My meditations, fitness, and confidence/beauty.
But my spine is rotated to the left and curved left at the same time.
I didn't know it was round about, I thought I was targetting the root cause of the problem?