Hello,
Yes this can be done within 2 days(even 1 day if your current code working fine and well documented). I have experience doing similar task, I mean authentication using JWT. Let me now when we can discuss.
I am Sr. full stack developer & DevOps with 5+ years experience. I have experience in JavaScript, NodeJS, ExpressJS, AngularJS, MongoDB, MySQL, PostgreSQL, Linux, Nginx, Apache, AWS, Git, etc.
Looking forward working with you.
Thanks