As with other changes to "established" wrong-headed laws, persistence is the key. We must keep pressing our case. Day after day, week after week, year after year. Quoting Churchill, "“Never give in, never give in, never; never; never; never - in nothing, great or small, large or petty - never give in except to convictions of honor and good sense."
We once had a little Cocker Spaniel. That 20 lb dog could move my 185 lb body across the room as I groomed him. Because he didn't like the clippers, he'd constantly lean away from me and I'd have to move a little to be able to reach him. In not too long a time, I'd be at the end of the clipper cord. The dog's persistent pressure was effective.
Once the legislators recognize that the issue and it's supporters are not going to get bored and give up, they will respond. Of course the initial response will be to ignore, then to mock, then you win.