Bump the ISO to 800+ and use the cam software noise reduction. See how it does.
Really on modern cams you should be able to go much higher than that and get usable images.
Probably need at the minimum 80-120 but 200+ works a lot better and still may get motion blur.
If you're resting on something and your heart rate is low you have a better chance of pulling off at a low shutter speed if you don't breath.
Still, your not going for a Play Girl cover shot... is a little blur the end of the world?
Or work with the blur.
Photography isn't all about perfection; it's an art.
Making compromises to grab the image you want.
ISO 2000, 50mm L wide open at f/1.2, 1/750@second
It was damn dark.
This was set up in under 5 seconds.
It's a keeper... even if it's not perfect.