How to handle LWD with hr's

I have communicated to hr's that I have my LWD on Sept end bcz of which I could able to attend the interview to know my level and I was able to clear round 1 and some cases 2nd round with client and 1 company went till 3rd round waiting result. I don't have any offer in hand and still have 45 days in my np. Now am preparing really hard to secure atleast 1 offer. But my problem is how to handle my LWD I have told to hr in Sept end but it's in mid October.Will they consider waiting for 2weeks? Inbetween we do have long weekends keeping these in mind I have taken this risk. Please share your experience/suggestions how to handle this situation wisely.

Note - I cannot negotiate with my current project.