Fullstack Mentorship for Existing Trading App

I want to modify my existing trading app built on Python-React-FastAPI-Postgresql and managed through Coolify and code in Github. I want to modify it myself and create backup of DB and Code using Github . I need guidance on doing this modification myself. We can consider it as type of handson project which i want to learn while using it. I am looking for a Fullstack developer who can help me understand the existing code (Ofcourse i know the functionality) and guide me on deployment. It was developed with help of another Freelancer who is now quite busy to take up my tasks and deliver results on time. I am also expecting Optimization technique for the existing code. I have some level of experience in coding and can understand and generate the code with help of AI but dont have full end to end understanding of Fullstack. I dont consider this as a one time deliverable project but application support project. Person should be available atleast 30 min/day to explain, suggest improvement in the app and train me on fullstack. I am already taking training on fullstack through online courses. Person must be from India Timezone. This should be a 6 months activity.