Its not too late you can buy now bitcoins when the price is low. Im sure that it will rise in the near future. If you have done that you must wait for the right moment to sell it.
If you don't want to take risks you can wait for bitcoin to rise and then buy it.
That is what most of the newbies will think in their investment in bitcoin, they need to buy bitcoins right now and just hold it for long term so they can have a good investment and this is the right time to buy because the market is falling and there are dips in the market which is a great entry to buy some cheap bitcoin for long term investment.