Unfortunately the source code is currently not open sourced. Some more details at (https://www.researchgate.net/publication/370980395_A_NEURAL_...), the source code is built on top of this.
The approach is used to solve other problems and papers have been published under https://www.researchgate.net/profile/K-Eswaran
We are currently trying a build a full fledged LLM using just this approach(no LLM training etc) and also an ASR. We should have something to share in a couple of months.