Need ideas on how to show cholesterol build up

Hi, I am trying to show cholesterol molecules increasing/decreasing over a period of time (in a rough triangular pile) according to the variables selected. The build up/decrease of cholesterol should stop when the timer reaches 80 seconds. Can i do this using the frames like using shape tween or would i just have to have many key frames and show more molecules on one frame than the other etc, or would I have to write some code for it?

Any help will be greatly appreciated.
Thank you :slight_smile: