Ok obviously you can't go read a bunch of books now if you are antsy about taking the toefl in the near future. Nor do I think it would help you, because honestly what you know by now from reading\listening\speaking cannot be immensely improved in such a short time (mainly because it doesn't take such a short time to read lots of books and actually absorb toelf related information or skill). While I would suggest you to go ahead and read them books, for they are really something, (and yes of course it improves language but I think that it does so best when language improvement isn't the reason you cracked a book to begin with), I would suggest that only in general and not specifically for toefl studying purposes.
For the toefl: Buy ETS's Official Guide.(ETS Store
If you already have a preparation book of that sort, I would suggest you just practice the sections you think your performance on them is weaker (Reading as you specified). There are always enough internet sources that can be helpful for such specific information about a certain section. I bet there are plenty sample questions or advice on the reading section. Good luck