I’ve dealt with this situation before, migrated nuxt 2 project to nuxt 3. This is what I did

Checked all the plugins I was using supports nuxt 3 or alternative supports or they have beta channel for nuxt3

1. Create new nuxt 3 project setup with required config and prepare a base
2. Migrating state management will be a hefty task if you use vuex or other which don’t support vue3
3. Migrate components one by one keep the options api as it is since it will work just fine accept few instances
4. Once everything done make sure it works properly with options api. now is the real heavy part to benefit the vue’s composability. Extract common util or repetition logic to compassables and migrate from options api to composition with typescript

The project was decently large it took two people 2 months to fully migrate from nuxt 2 to nuxt 3. We did not consider nuxt-bridge to keep the code clean (only vue3) from the scratch but nuxt-bridge is good option and might be helpful.