Bala, All OTM options, on the day of expiry are thrown in the dust bin. There is no settlement of OTM options. Only ITM options gets settled and hence there will be brokerage, stt etc.
So you have to see, whether there is chance that PUTs might come ITM by expiry. If that is the case, then book profit now.
Another point is, those puts might be worth peanuts now (say 2/3 rs). So in remaining 5 days, u will gain only 3 rs .. But if you can squareoff the position (and pay brokerage of say 3 points), you will release the margin money. And with this released money you can take new position giving you more the points then what u are saving in brokerage.
Bottomline, don't be penny wise, pound foolish trader.. Look at bigger picture.
Happy Trading