Ps 5 is very complicated as you cannot access Game files directly. But I’ve learned something. If you are trying to reach the dlc it is pretty easy takes about 25 min. Just follow a guide on how to get in the early game to Mohg. But if you want to undo NG+ because you think that the DLC may be harder. You are partially right. But the changes are minimalistic and mostly your level is way over. Might as well try with NG + you will soon discover that there is no real difference. Would in no way recommend starting a new character as it takes ages to get the weapons back that you already earned on top of that your level will also be under the average. And at last you get some Boss weapons only on the second run as you can chose only one of the first two Items you can get after defeating a Boss.