Newborn lounger

Okay mommies please no bashing but need some honest advice. I have a 4 day old and he tends to spit up a lot so Iv been letting him sleep in his newborn lounger in the halo bassinet at night... I always swaddle and place him upright so his airways arnt blocked but after reading more about it, it says they should not be left unsupervised in it. Do you let your LO sleep on one?