Don't take it to heart, your doing an awsome job with your creativity, your a decent writer and renders have improved tremendous.
All in all, you have a great story. You have learned a lot and are still growing and improving your skills.
You came a long way already, so be proud of that.
Lets give you a movie example, they are working years to create a movie of only 90-120 minutes long.
Another example a high standard escambly game (from a gamehouse) they sometimes work with huge teams (at least 3 ppl) and 1 game can take up to 4 years or even longer wich has aproximatly between 90-240 min of gameplay time not included is animation time.
So, knowing this, you have a good amount of content: creativity, renders, animations and story. There are only 2 ways of speading up rendering wich are improving graphic card and- or using render farms, (those big game houses and movies use farms)
Ill say it again, be proud!!