There are a few apps nowadays for voice transcription. I've used Wispr Flow and Superwhisper, and both seem good. You can map some hotkey (e.g., ctrl + windows) to start recording, then when you press it again to stop, it'll get pasted into whatever text box you have open

Superwhisper offers some AI post-processing of the text (e.g., making nice bullets or grammar), but this doesn't seem necessary and just makes things a bit slower