It looks tiny but old because it's stunted from abuse, not because it's necessarily lowryder.

A major cause of stunting in container-grown cannabis is
a) it was rootbound at some point in it's life or
b) your soil pH is all fuckulated or
c)it has been overwatered or your drainage sucks or your soil is too dense and clayey, therefore it has root rot or no O2 in the root zone and is ACTING like it's rootbound.

So go get yourself a gallon of distilled water, pour the whole thing through your plant, and save all the water that drains out the drain holes.
Test it for Ph. I bet it's going to come up low. That's what the plant looks like to me anyway.
When you figure out the pH, then you can fix the problem by watering it with pH adjusted water.
Meanwhile don't start fertilizing until you get that part straightened out.
Then you can use 1/4 strength nutes. Ones designed for cannabis are ideal, but if you're cheap you can use schultz bloom plus available at walmart and home depot. It's not the best, but then again, your plant is already kind of sad so trying to maximize yield is going to be a losing battle.
Write this one off as practice.