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.
I think it depends on the individual strategy, if the current downturn you feel that the market will continue to decline further then you can convert some of the funds from your portfolio into stablecoins, but if I personally when there is a downturn like now then I will choose to hold and leverage this decline to make more purchases because I firmly believe that bitcoin can provide greater returns when the market bounces back.