I think you'll find this lack of motivation to study is a fairly common phenomenon. Somewhere inside of you there is a conflict - though it might not be realized consciously. In study, if the expected results of study are perceived as a means to achieving a particular goal that appeals to you, the motivation will come. If it isn't at the moment, it could be because there is nothing -at this time - you feel passionate about.
I know that in some cultures - most, probably - that academic achievement is regarded as the big stepping stone to success in life. It isn't. You have only to study a few biographies of great men and women to realize that. So what to do?
A famous Scottish philosopher named, Thomas Carlyle, stated: "That man is most original who can adapt from the greatest number of resources." He was talking about Creative Ability. So it behooves us to read widely. That way our subconscious is able to put together wide-spread and unrelated concepts to come up with new ideas.
In your case, you could take time off and simply read for enjoyment. Remember, when you know nothing about a subject there is generally little interest in it. But as you learn something more about that subject, both the interest and motivation grows. And before you know it you'll become enthusiastic about your increasing knowledge in that field.
So read and enjoy. And get back to those studies when your heart tells you you are ready.
May it all work out for you.
