If wisdom is weak, you need to have stronger samadhi to control the defilement first; otherwise, they overwhelm you when they come.
When wisdom is weak, you need to have some concentration to make the mind calm down first; don’t think anything, just focus on the feeling. You cannot catch the thinking mind because it is so fast. It is difficult to watch it as an object. Feelings, however, are more obvious.
When the mind calms down, you can step back and watch the defilement.