[Answered ]-__init__() got an unexpected keyword argument 'wellness'

You’re trying to instantiate a SurveyForm, rather than a Survey, inside your is_valid block.

But actually you shouldn’t be trying to do either, and you don’t need to set all those fields from cleaned_data: the whole point of using a ModelForm is that you can just do form.save() and it creates and saves a model instance for you.