This is what we decided to do as well at my work. We've been using LaunchDarkly to handle the feature flagging, and we slowly migrate features from 0% to 100%,

This is what we decided to do as well at my work. We've been using LaunchDarkly to handle the feature flagging, and we slowly migrate features from 0% to 100%, or first roll out features to less important customers, etc. Works like a charm, our product owner and engineering team are happier than ever, since it takes away a big part of the risks and makes rollbacks a lot faster.