Do you think that BTC is going to reach 20k soon?
If yes do I need to sell all alts and wait for rising BTC?
What to do now ? I am confused!!!!
We do not know what will happen in the future. But, I think do not sell all the altcoin you have for one coin, you need a strategy in investing. If you sell all altcoin and wait for BTC rising and what you get does not match your estimate, you will incur major losses. So, I think it's better to divide it into another coin 70% for BTC and 30% for other coins, but it all depends on you.
The future is very unpredictable, so we never know what will take plan, the trend now might not happen in the future again.