Never too late to invest in an altcoin when you saw the price was gradually raising. Tho, you need to plan your entry point and exit point if somehow, it has a weird move and falling down.
Making plan was a good strategy for investor than to invest with no plan in the end losing money.
It was to risky to invest if the project or the coins we invest are no update and development on it are dont have still new.
Must better to doing plan and think it first because it was not to late if we want to invest.