Hey Hamza, anytime you change things with your technique or shots it can have that affect for a while untill you get fully comfortable with it. With the over spinning it’s also about learning and training when you do need to spin more and when you can hit with a slightly thicker contact.
Also if you weren’t over spinning the ball already and try this, it might be that you are now hitting the ball a bit flat. So just make sure you are still getting a good brush on the ball and you’re consistency will come back I’m sure!
Tom