Yes, it's making progress. Nobody would accuse the UN of being an efficient institution. That is not the standard. It's still a highly inefficient institution.
Progress has been made under the last Secretary-General on improving the management practices for peacekeeping. The Department of Field Support has greater autonomy than it did before, and that has allowed some of the practices that are necessary for sophisticated field operations to be less impeded by the kinds of bureaucratic strictures of the Department of Management. It's a work in progress, though.