I’d disagree jb678. It really depends on how much it would cost. Being behind schedule costs money, just as being over budget. Being behind schedule might cost just as much if not more. As said before we would really need more information. Whichever saves more money is the best solution. Being over budget but ahead of schedule might give you gains that counteract the excess spending. Being behind schedule might be counteracted by being under budget. It all depends on the circumstances.