Switching Google Voice Typing language and force offline mode?

I've been using Google Voice Typing for quite some time as it's fast and convenient compared to typing on the phone keyboard. However, I speak multiple languages, and when I use the Google Voice software, if I enable different languages, the software is supposed to "auto detect" the language I speak, but it makes mistakes all the time. One way for me to get around this is to only select the language I want to speak in and deselect the other languages, but it gets tedious to do. There are a lot of languages that Google Voice Typing supports now and to search for the language I want to speak can be a bit of a pain when I need to reply to several messages in a short amount of time in different languages. My understanding is that there is no "long press" or a simple "language toggle" button for Google Voice Typing, but is there any way to set something like "favorite languages" so they can be displayed at the top so the languages are easier to find? I remember some of the older versions of Google Voice Typing would go by the keyboard language that's on, so as I switched the keyboard language, Google Voice Typing would only be picking up what I say in that language, which worked out much better for me. At the same time, I notice that when I don't have the best internet connection, it can take FOREVER for the Google Voice Typing to work. If I go offline (airplane mode, turn off data, etc.) then it works great because Google Voice Typing goes to offline mode. Is there any way to force the phone to always be in offline mode for Google Voice Typing? Since we can download each diction library offline already, I would hope there's a way or some kind of code that can force the software to use the offline library rather than trying to connect to the server every time.