Does Taiwanese Mandarin have the neutral tone?
I guess you are talking about 輕聲.

臺灣注音符號的聲調除了一聲、二聲、三聲、四聲以外，還有個「輕聲」.

In addition to the first, second, third, and fourth tones, there is a 輕聲 (light tone) in Taiwan.
It is also known as the fifth tone or the neutral tone.

符號是一個小圓點；直寫時，標在上方；橫寫時，標在左側。

The mark is a small dot.
When the text is written vertically, it is marked at the top.
In a horizontal print, it is marked on the left.

For example,



You can search 注音符號發音教學 on the YouTube site.