Alright, the results are in and the majority (58.7%) voted for Amy's Secret!

Here's the plan:
I will be starting off by producing 3 Episodes of Amy's Secret, which will cover the stories introduction and first experiences. These Episodes will release after each other - so until then, Emily's Diary is having a pause.
After those 3 Episodes, we will have another poll that will gauge how popular the series is and in what capacity it will continue alongside Emily's Diary. After the poll, Emily's Diary - Chapter 3 will begin.

Multiple people also suggested to use Amy's Secret to practice animations. I think this would be a good compromise and something worth exploring, just not for the first 3 Episodes. I will come back to that idea afterwards.

Release Schedule:
Episodes of Amy's Secret are supposed to be shorter (2-3 Minutes) and more straight to the point, so production won't take as long.
However, I still need to build the whole set and prepare all assets before the work on the first Episode can even begin, so I can't give you a concrete release date just yet.
If I had to take a careful guess, I'd target Mid-June for the first Episode, and then 2 weeks of production time for each of the Episodes that follow. I can be more accurate after I've actually completed one. 

Lastly, a lot of people asked if Emily would also appear in Amy's Secret and yes that's the plan. Just as Amy appears in Emily's Diary, Emily will also, sometimes, have physical appearances in Amy's Secret. Both stories are supposed to complement each other and will be told in a chronological timeline. This means Episodes 1-3 of Amy's Secret will play in-between the events of Episode 19 and 20 of Emily's Diary.

Alright, and now I'll get to work. As always, my best estimate for a release will always be reflected on the pinned post on my SubscribeStar page!
Enjoy your Sunday!