for me it is better to sell your altcoin now and to invest in bitcoin because the bitcoin price is now so when you invest in it now I'm sure that you will earn a great deal in the future when you sell your hold.
But I feel this is not the right time to move your altcoin into bitcoin. Because, if you do that, you will lose most of your potential profits. It is time to hold and wait. If you want to make big profits with your altcoins then you must keep going with it by simply holding.