Too much Neem oil. Plus did you spray with the sun on the plant? The oil will burn the leaves. You have to spray early in the morning.
In a half gallon pump sprayer I fill it with water, add two drops of dish soap and then 1/2 tsp. Of Neem. But you must spray the plant completely. Up, down, over and under. If you don't, the buggettes can come back very quickly.