bitcoin go up over 8k today after went down deeply 6k just few day ago, very good new. Is it a right time for us to invest bitcoin and wait 2,3 months when its price go up stronger. Pls share your thought. I really need some good advice 
lets wait a little more. bitcoin price is still decreasing right now.
if you want to buy more bitcoin, you must take a full attention to the market price right now.
What do you mean by the right timing? The bitcoin cycle cannot be without panic. After the downtrend is over, it will go to the new high. But you must catch no panic selling. Holders always win.