Help need to lose 30lbs.

Ok so I just got back from my one year check up. I am down 125lbs. Dr. Hammer told me I need to be at 160lbs before he will do the panni removal. I have been going back and forth with ten pounds for a while now. How do I get the ball rolling. I thought about going back on liquid protien diet. I don't have a problem giving up food do you think that will work to lose some of this extra weight. Yes I know I should exercise. I have a exercise bike that I am going to start riding everyday how long or length do you think I should ride it? I haven't really had to do anything this past year for the weight to fall off so I kinda feel like I am a newbie when it comes to making the weight fall off. I guess I got spoiled. Please help me. Diana 315/190/150

Going back to the basics will help, just make sure you get in all your vitamins and water. ((((((HUGS)))))) Dawn