Convert bitcoin to the etherium is a wrong decision. Bitcoin in 2018 did not please investors, the market does not show growth. But the etherium has disappointed even more, it has fallen in price below 200 dollars and the tendency to the further falling remains.
well, so why not to buy ETH on the bottom? If you look to the price chart it's not the first time when the ETH fall over bitcoin, i think now is one of the best moment to convert.