But still, if you dump your altcoin right now, your profit will not be too big because almost the altcoins price is down a lot and it is waiting for the next bull run that can happen this year or next year.
My advice is just waiting for more until the bull run comes and give you the chance to sell your altcoin at the highest price and, of course, sell your bitcoin to take profit and then you can wait for the other bear run that will comes after the bull run.
That will be better to do because you can make a big profit from the market situations and you can buy back bitcoin at a low price and invest your money in altcoin for a short term investment.
While I am sure, you still have the other money from the previous profit.