Again, I am going to note that you make money in poker by making your opponent make mistakes. If your opponent is on a draw and you bet the pot or less into multiple players, it is correct for someone with position to call on the draw. If you move in on the turn to force them out, it is correct for them to fold. So, what you have done is make your opponent do exactly what he should have done.
The correct play would be to overbet the pot by maybe 1.5x to give draws bad odds to call, then bet the pot on the turn to give them bad odds again.