Market is witnessing some gradual dumps and it's a know fact that altcoins will bleed more than bitcoin and they will be stable or recover only when bitcoin recovers and pumps. So will it be wise to hold on to Altcoin or switch to Bitcoin or convert the funds into stablecoins and wait for market to either start recovering or to dump further to buy more in order to reach breakthrough for the lose which we might have incurred till now.
You should have a diversified portfolio if you want to get the maximum benefits in this crypto market. You should hold bitcoin and some good altcoins for long term. Do not sell them, even if the price go down as there is likely the chance that they will recover when the market goes back up.
Also you should always have some stable coins with you so that in case there is a sharp dip in the market, you can always buy some coins at cheap prices or use those stable coins for dollar cost averaging.