This site seems to have lots of information that you need.
A Toddler in Taipei: Explore Taiwan with Kids
https://www.atoddlerintaipei.com/parenting-resources
"6.) Taipei City Playgroup
This is an English-speaking playgroup where parents can attend and post outings, share information, and connect. If you’re interested in joining, it’s a secret FB group, but send me an email and I can help you get setup! "
If you contact with the site owner, and then parents with toddlers, they must have more information.