After a break after my competition..

I begin bowling with my mates again. This time round, I improved .. only with my ball speed. Now that my ball skids too far.. It's a problem for me to overcome again.

My mate recommend me a style to actually increase my revs, fine. I thought it was gonna help me much, but I was wrong. Things went worst, I tried the style out, and tried back my old style. Repeating again and again. I realised my scores, accuracy , everything is gone! My scores went low, swinging in my shots. I'm going back to my old bad habits.

Anyone here went through this before? I need really good advices on these. I wanna get back to my old style. I rather slowing down my ball speed than learning how to increases revs.