I am taking NDVI readings in a controlled environment, with fixed LEDs (red / NIR), a fixed camera, and a fixed seedling tray.

I understand that the NDVI values will be artificial and will not compare to satellite or agricultural readings. I am instead interested in taking consistent images of the same plants over time and measuring change in the NDVI readings. I am currently planning on measuring early stage growth so that I don't get inaccurate readings due to overly dense material.

Given the consistent environment, would I be correlate an increase in NDVI values to growth with high accuracy? What sort of limitations might this experiment have?

What statistical / computational methods can I use to quantify the change over time in NDVI values?

I am currently reading a number of papers to try and understand methods used by scientists in the past, but if someone could give me a high level explanation of the process that one might use for this kind of thing it would be greatly appreciated.