Add a field to a prod content type

Hi everyone,

I have currently an strapi app deployed on Heroku

I want to add 2 fields on the users content type but there are 7 000 users on this field,
I wanted to know if I add those 2 fields what consequences will this have on the app ? Is this dangerous to do that on this number of entries ?

thanks you

Capture d’écran 2021-04-22 à 17.32.03