How to refactor multiple ifs inside for loop to address code complexity error at build stage

Question

I've recursive function with multiple ifs inside for loop and it's failing on build because reported complexity is higher than allowed. I guess one way to fix this error is by refactoring it and taking if logic and for loop apart but I'm not sure how to implement it.

def build_specs(schema: StructType, path_prefix=None, custom_input_datatypes={}):
   """
   schema: is glue_dynamic_dataframe.schema()
   path_prefix: we're passing it as None
   custom_input_datatypes: is dict object as {'id': 'int', 'created_at': 'timestamp', 'salary': 'long'}
   """
    specs = []
    for field in schema:
        path_name = build_path_name(path_prefix, field.name)
        if field.name in custom_input_datatypes:
            spec = (path_name, f"cast:{custom_input_datatypes[field.name]}")
            specs.append(spec)
        elif isinstance(field.dataType, ChoiceType):
            datatype = decide_datatype(field.dataType.choices)
            spec = (path_name, f"cast:{datatype}")
            specs.append(spec)
        elif isinstance(field.dataType, StructType):
            specs.extend(build_specs(field.dataType, path_name))
    return specs

Can someone please suggest how to refactor it ensuring recursive function does't break?