Depending on what you eat and the amount of calories you'll still be digesting after the workout, but I don't know if it'll be enough, I think you'd have to pay attention to how you feel after the workout and the next day and adjust accordingly
That being said, if eating disrupts your sleep why don't you try a "liquid meal"? Milk + gelatin/collagen(or whey/casein) + sugar and salt
From a "workout perspective" the importance of the post-workout meal is to stop muscle protein breakdown(MPB) and stimulate muscle protein synthesis(MPS):
"Indeed, in addition to the 3-fold rise in MPS from essential amino acids(EAA), there is also a significant anti-proteolytic (∼40–50%) effect of feeding on skeletal muscle which is apparently entirely attributable to insulin."
"It follows that increasing dietary EAA availability after exercise enhances both the magnitude and duration of the increase in MPS."