I don’t know that you’re actually doing anything wrong. The Fast 201 is very responsive which is why it’s such a good beginner yoyo. A couple things come to mind though:
Make sure you have nice straight throws. Look at your sleeper. Is it tilted to one side or the other? Remember that whatever angle the yoyo is at when it leaves your hand is the angle it will try to maintain. If it’s tilted that could cause it to bind a bit sooner.
Also, with a responsive yoyo it’s not actually the tug that makes it come back, it’s giving the yoyo slack that makes it come back. The tug just causes the string to slacken. Try this: Throw a strong sleeper. With your non-throw hand grab the string about half way and lift the yoyo about 2 inches. Now drop the string. The yoyo will respond immediately. Notice that you didn’t tug it at all, you just gave the string some slack when you dropped the yoyo. In rock the baby you may be giving the yoyo a slight bounce or you may be giving the yoyo some slack which is making it respond before you’re ready.
If you got yourself a Replay (the responsive one. The Replay Pro is unresponsive) I bet you’d discover that you’re actually a much better yoyoer than you realize. The Fast 201 is a great yoyo for beginners who have trouble making the yoyo come back. You may have just already moved beyond that skill level.
Finally, about a year ago Yoyo Expert and Eric Koloski made this video of tricks specifically for the Fast 201. You might enjoy learning these tricks since they are all done on the 201 in the video.
