No, it isn't too late that even more than 40 years old professionals can become Data Scientists. The other day I came across a professional who has 20+ years of industry experience who learned Data Science by enrolling in the Data Science Masters Course from Intellipaat.
If they can do it, you surely can pull it through. Age is just a number if you are skilled or qualified. I would suggest you check out this video to help you understand how to approach this situation and about the quality of the course.