Depends on how soon can you upgrade/swap out that 483 OH. Like if you have a chance to get Elegon 1h hc axe then you are better off waiting for it. The axe in MH and the sha sword in OH is one of the best (3rd best or 2rd best depends) combo. Or if you can get the Amber-Shaper hc sword, even better then.
But keep in mind that if you switch to the 2h axe you will most likely need to upgrade 2x to equal the ilevel of your current MH sword to outdps your current DW. So it will be a marginal upgrade but a lot of VP spent, hence why I would suggest to just wait a bit and see if you can get some 1h hc weapons.