It is absolutley not too late, there is a chinese proverb that says
"The best time to plant a tree was 20 years ago. The second best time is now."
Time is really an enemy when you are investing, it is indeed that yesterday is the best time to invest but it's never too late simply because of the opportunity that we have in bitcoin is undeniable amazing, bitcoin really makes people rich and investing on it today is a good option. Buy more bitcoin as long as you can today because in the future it will surely high in value. Don't waste the opportunity now, ride now and enjoy tomorrow.
Only morons invest in bitcoin right now when it's at an ATH. Never chase the pump, buy the alts now and profit massively in a couple of weeks