It's never too late to go back to the wt. And, don't worry about doing it out of fear. Most jws do it for that, and anyway, the bible says you're supposed to be afraid of god.
It's never too late, because the wt has been setting dates since the beginning, and it never came. Charles russel, rutherford, fred franz, they all set dates for the end. But, no end ever came, except for their own ends. And so, don't worry about too lateness... you have all the time in the world. In fact, you are going to come to your own end before armageddon comes to this world.
The end of the world thing at god's hand is a totally artificial fake enterpretation that is read into the bible. All that end of the system concept was referring to the end of the jewish system. There are no second fulfillments. Jesus said that some of his friends would be there when he came back. Did his friends see him coming back w power and angels? No. That should tell you something. So, go back to the wt, but don't be afraid. You will die of old age or disease, and the new system won't come before then.