No,you will not get a year lag.you will have to give the supply exam of those papers in 4th sem.no need to be tense,relax.many of my friends got more than 3 supply in 2nd sem,never got year lag.just study for those subjects and clear ur supply in 4th sem.i have got a lot of supply in 3rd and 4th sem,but never got year lag.so,study,relax and take care.