TextField for very long string fields would simplify the code and make is easier to maintain.
CharField should be used for smaller strings and TextField should be used for larger strings.
CharField max_length adds value when the value is known format (phone numbers, ISBN) with a known maximum valid length.
For arbitrary long text the max_length adds scope for unwanted validation errors without adding value elsewhere. Remove it and rely on unconstrained TextField.
So in practice, do this
class SomeModel(models.Model): some_field = models.TextField()
Instead of this
class SomeModel(models.Model): some_field = models.CharField(max_length=1000)
Django Doctor will run this check by default. No configuration is needed but the check can be turned on/off using check code
huge-max-length in your pyproject.toml file.