use Mimosu\NovaSplitDateInput\SplitDate;
    //...
    public function fields(NovaRequest $request): array
    {
        return [
            SplitDate::make(__('Date of birth'), 'date_of_birth')
                ->delimiters(__('Year'), __('Month'), __('Day'))
                ->limitYears(1900, 2024)
                ->rules('required', 'date'),
        ];
    }