yes ,but only if u really utilise ur time very very effectively.         get ur iit syllabus n level covered atmost till november.            side by side give 1/2 hrs every day 4 ur board exm               .in last 3 months revise thoroughy.     n remember in such 1 prob is that u dont get enough time 4 much practise.            so frm now onward not only go ahed covering ur syllabus but keep revising ur covered chapters .        now stick 2 1 book n hv mastering over it.               also join test series brillint give very precise marks as u ll get in iit.              improve ur accuracy n speed        . try 2 develop  ur own shortcuts.                   calculate mentally dats inc speed.             cover imp chapter like coordinate,vec,early.        4 organic get ur concept really clear n practise much           .physical -practise n practise.physics -HCV is helpful.            n MOST IMP.        HAVE BELIEF IN U.      THAT U CAN DO IT.               i was in ur same condition .            i read only 4 5 months 4 iit.             vithout ne coaching.     only thing was i didnt had confidence.            n so i ll suggest do hv confidence in u .        prepre a plan ,stick 2 it , every month analyse ur progress n keep improving.                n yaa if u r startng now initially u ll problem but d rule us KEEP MOTIVATING N INSPIRING URSELF. ALL THE VERY BEST