Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
I have found the same problem too. At times dictation will also stop mid-sentence, and this is infuriating. I've given up using the dictate application within Word, but have now activated speech recognition in Windows and use that functionality in Word. Simply activate by pressing the Windows icon + H and the feature turns on. It's not perfect but it's definitely better that the dictate function within Word.
Hope this helps.
Hopefully Microsoft will sort this out because it's potentially a great feature!