Yes, you should ditch months of work.
🧌
On a more serious note, Anko will stay forever, so if you decide to stop using it for new code, previous code won't break. Java not being really maintained for years (especially from an Android developer standpoint) has never been an issue for existing projects, even those that adopted Kotlin, same for many libraries (unless they use deprecated/removed APIs). Anko should work with AndroidX using jetifier.
If you want something that is maintained, I advise you to use the KTX artifacts of AndroidX.
I would also suggest you to try an alternative to Anko I built which is called Splitties, moved to AndroidX, and is maintained actively. It has extensions like Anko commons had, and has a Views DSL like Anko layouts (but made differently to be lighter and more flexible).
https://github.com/LouisCAD/Splitties