You made a video, just a video, but for best results you should create something around that video.
Create a targeted youtube channel, include more than 1 video for children.
Add video description with targeted keywords,
Video title needs to be descriptive.
ALSO CREATE SUPPORT AROUND YOUR CHANNEL:
1. Create relevant social media profiles on platforms where you will find moms, aka Facebook and Pinterest.
2. Reach for mommy blogs and forums
3. Create your own blog.