Feature Request: Volume Slider for Text to Speech

I’ll be watching a show with paticularly low volume, in this case Lupin (although this problem exists with any shows) and I’ll hear/see a word I want repeated. And then I alert everyone else in the room because the text to speech is at DEFCON 1. Is there a way to adjust the volume to match the volume of the show? I love the text to speech feature, it’s one of the reasons I pay for LLWN, but I just realized just now I don’t use it as much as I would otherwise because its so loud.