I might find a way in the future. Somebody mentioned splitting the archive, I've looked into that a few times, but never got it to work, but maybe in the future I will. I'm more focused on finishing the content for now.
from renpy 8.2+ / 7.7+ on the downloader is the way to go - a tiny base apk and the rest of the content will be fetched from a webserver.
not a new idea but directly integrated in the framework, less hacky and (maybe?) more stable than similar solutions implemented within the game code.
[full disclosure: never played around it myself, and I don't even care about mobile releases]