The short-term answer is that yes, I would wait for the dip or correction to happen if you're thinking about it right at this moment.
Long term, bitcoin has not really reached the forefront of popular culture and spending, so it's going to be rising in the future.
Yes for short term goal it's late to buy bitcoin now but if you are someone that is good for long term goal in bitcoin, it's never early nor late to buy. I know there is hardship for this investors that just recently know what bitcoin is and they are keep on asking themselves if that is already late to get into bitcoin. But look for long term plans in bitcoin and you will be calm.