I think you have enough time Shabi, if you study diligently and give up your social life (like I did) for about a month you should get a good score. For most Nepalis the quant portion should be a breeze... the verbal might be a little more difficult than expected. I took my GMAT at the end of last year and forums like testmagic.com and beatthegmat.com helped a lot. Many people usually recommend about 3 months to prepare, but I guess it just depends on what level you're starting out at. Good luck!