YES ,it is possible if your basics of primary are clear and you devote full time to your prep with sincerity . JUST PUT YOUR WHOLE SELF IN IT...ANYTHING IS ACHIEVABLE!!!
time is the valuable sortie so first in the list you have to prepare a good schedule
like for math and English ,General ability
get going with toughest objective and later getting thorough after this you may catch up with easy aspects go on to current affairs etc .. good luck
i would suggest you to download the study material from a website called DDE defencedirecteducation.com they are very handy, they have organised their general knowledge content in few pages and good number of questions appeared in my last CDS from their material. they also provided me curent affairs content.
yes you can do.Make the pattern of the syllabus and divide the syllabus according to the time period i.e in to 2 months.you can do it easily.Nothing is impossible if you are giving your effort.