oops sorry name donged me..

Aoa everyone... I am new in this forum and preparing for CSS 2018.
My optionals are:
International Relations
Geography
Governance and public policy
Indo Pak history
Environmental Sciences
The issue that I am facing is that I started my preparation in May and completed my Indo Pak history, right now I am preparing Governance & public policy + International relations, but I am feeling that I would not be able to complete my preparation till January 2018. Should I go for CSS examination in 2019, I think that in 2019 I will be better prepared.
Please give me your suggestions what should I do.
This is my first attempt and right now I am 22 years​ old, I really want to clear CSS in my first attempt.

Enlist the books you are preparing from, please.

__________________
Let It Begin ....

I am using JWT book for Pak affairs, Oxford​ history and culture of Pakistan by Nigel Kelly and Nigel Smith,
Pakistan and world affairs by shamshad ahmad
For current affairs I have JWT book for C.A, JWT magazines and Dawn (only opinion page and international news)
For IR I have the book of JWT+ I am using the notes of my younger sister who is a student of political science and IR. I am using Goldstein's book too, many parts of JWT's book for IR is taken from this book.
For environmental science I am mostly relying on interenet, I have the book of oxford for environmental management for O levels and the JWT book for this subject.
For Indo Pak history I used different interenet sources like story of Pak, history Pak and css forum + history of Pakistan and India by azmat Farooq.
For Governance and public policy I have research articles from internet, ppts.
For geography I have a bundle of books because I am a graduate of geography.
For GSA I have the book of JWT. And I use internet sources like britannica encyclopedia, how stuff works, Science for kids etc.
I have not started the preparation of islamiat, but I have the book of carvan because I am opting it in English.
For English composition I have Wren and Martin​'s book along with many other composition books, and I have Baron's world list.

I started my prep from 5 April and have finished three subjects ,,,
US History
Islamiat
Environmental Sciences
also making comprehensive notes

Kindly share ur books/Source for the mentioned subjects.

What does JWT stands for

Please share your strategy for ES.

JWT stands for Jahangir's World Times

I started from Environmental History especially from UN environmental concern s and different conferences and agendas.
Secondly,I break course outline in seven sections and condensed whole course in 25 notes pages ; almost 5-7 pages for each section.
Thirdly,I downloaded last five years past papers and align my strategy according to them; i noted important Mcqs too.
Last,I took help from UNEPA documents news magazines and current events regarding environment.

I started from Environmental History especially from UN environmental concern s and different conferences and agendas.
Secondly,I break course outline in seven sections and condensed whole course in 25 notes pages ; almost 5-7 pages for each section.
Thirdly,I downloaded last five years past papers and align my strategy according to them; I noted important Mcqs too.
Last,I took help from UNEPA documents news magazines and current events regarding environment.