A lot of the problems with the Rangers are mental, but you also can't ignore the fact that they have only two wins against teams currently in a playoff position and had a pillow-soft schedule to start. They're going into the teeth of their schedule and they're down bad. Somehow, it might get worse.
For their sake, they'd better hope Panarin isn't out for much longer. The other vets are underachieving and the youth aren't getting a fair shake. And if you can't get a single goal against the worst team in the NHL playing without their best defenseman by a large margin, then there's something deeply wrong with your strategy.