Humans are getting really, really good at computational chemistry and all life is about balancing a system of chemical equilibria. So maybe?

Computationally, we might be close. Practically, probably going to be awhile. There are aspects common to all life about the molecular machinery of DNA/RNA/protein synthesis that biology still does not have good models for yet . Without accurate models of the entire human proteome engineering to significantly reverse or delay aging is next to impossible - it would be shooting largely in the dark.

There were many novels, comic books, TV shows, radio programs, and movies before humans actually had the Apollo program to the Moon. 100's of years of them. No idea where we are on that time scale now. We could be in the 1950's during the Space Race or we could be in the 1850's before even planes were invented, and gliders were the highest technology of the time.