Look up cleansing rituals for objects and then get a real dream catcher. It's always good to cleanse objects of energy and then recharge them by putting them in the light of the full moon before use. That should be much stronger for you, if the practices I've been learning since I was a little witch are correct. The full moon is still a bit of a ways away, but even having a few cleansed ones at the ready at night may help, preferably ones you make yourself.