Oh and here is a photo a took of my friends 6 day old baby this was with all natural light opinions??
Usually 1/24th is too slow unless you are on a tripod, and you are sure your subject will not move. Since your focal length is only 20 mm, the rule of thumb says you can get away with it. You still have to worry about subject movement causing blur. Aperture is f/3.5 and ISO is 800, you don’t have much light.
The blanket is not a good choice, far too busy. It detracts from your subject.