You've probably heard "have patience, it will happen", but that's not helping you right now.
From the small amount you've written, it would seem that you need to "up the ante" with Gyp's focus on you. You have to make yourself more interesting than anything that's around for Gyp to be focussing on. More interesting than the ball. The ball should be the "reward" for doing the "work" at the end of the session.
Try walking at a faster pace. They call it "walking with a purpose". Instead of pulling back on the lead, quickly go in the opposite direction & say something like "Let's go !!!" in a very excited voice. If you know how to teach "watch", please go back to refreshing Gyp on this command.