It'd be very difficult. The Nazi Economy was so fundamentally screwed up that it could hardly exist without a near perpetual state of war. With most German men being at the front, a constant influx of POWs, Jews, Roma, Homosexuals, etc. were needed to be worked to death in German factories. It'll be hard to demobilize all of them, as large parts of the military will be needed to fight insurgencies, and carry out horrendous ideological goals described in Generalplan Ost. Further, the economy was also heavily dependent upon looting the treasury and gold reserves of other countries, which the Nazis cannot do in peacetime. In the event of an Axis victory, the Nazis could maybe buy 4-5 years with the blood money and war loot they've amassed before it all self-destructs in a fiery inferno.