halving is only effective under two conditions:
1. the coin is actually being used, or in other words it has real usage so the new supply generation cut in half can disturb the balance between supply and demand and lead to a rise.
2. the coin is useless but hyped up and gets pumped for no reason.

BCH has neither one of these reasons. it is useless so there no demand. halving can even damage it as it reduces the profit of miners by a BIG amount (half) and they can leave. also it is not hyped up anymore so pump chances are dim.