I would have fixed it in USDT (some part) and in the future you can trade with BTC/USDT pair. Some alts even should be keeped, don't go out with all funds, save some for the future
If I had such an opportunity, I would have fixed my deposit in USDT before starting a serious fall today. I am sure that today it would be best to do just that, provided that you know more than 50% of this.