Reply To: Is It Okay To Change A Minhag?

If your Minhag is a Minhag Ta’us then you can change it, even Lekula. Of course, waiting 3 hours is a Ta’us based on a typo in the Rabbeinu Yerucham, so no one should ever change to 3 hours (even if you used to wait one). But a Minhag Ta’us can be changed. Anything else needs a Hataras Nedarim and probably to ask a Shaila about as well.