Scrolling vs "view more" in comments/ large text fields

I'm trying to figure what the best was to handle large text fields in the middle of a form.(Ex. Comments) Is scrolling box the best way, or clicking a "view more" button at the end with the ability o view less. If we go with the View more/ view less option, is it okay to have editing the comments in a scroll and on read only have view more?

Thanks in advance for the help.