I have been using KeystoneJs for one of my projects. Keystone uses Prisma. I have been putting off using migrations for a while now so, I already have my production site with data and I do not want to lose my data to start using migrations. For this purpose, there is a technique called baselining in Prisma.
I have tried to explain the process in this YouTube video. Please leave a comment if you have any feedback or questions.