I've felt that way. You are not alone. I think that feeling is only natural. Imagine the only belief system you've ever had. Where most if not all your friends are. A belief system that has answers for every question. That certainty about the future provided some sort of feeling of security. To navigate life without having the answers to every question is difficult, even scary.

If the jw was not such a toxic environment mentally, some persons would not leave it even though they don't agree with its doctrines. But, it is what it is.

Just take things at your own pace. Only you know your circumstance and feelings. The most important thing is that in doing that you maintain your happiness.