python - Change Attirbute Name (Fiona)

I have a shapefile that has 2 attributes named "X" and "Y". I want to change this to "Lon" and "Lat".

My (limited) experience tells me that I should read in the original shapefile, preserve the original driver, crs, make a new schema with "Lon" and "Lat" defined, and then write a new/new named shapefile.

Is there a quicker/easier way with fewer steps?

import fiona

with fiona.open(filein, 'r') as source:
    source_driver=source.driver
    source_crs=source.crs
    source_schema=source.schema
    print(source_schema)


new_schema= {'geometry': 'Point',
         'properties': { 'Lon': 'float:16.6', 
                         'Lat': 'float:16.6', 
                         'SP': 'float:16.6', 
                         'X_meter': 'float:19.11', 
                         'Y_meter': 'float:19.11', 
                         'Depth': 'float:19.8', 
                         'Line_Name': 'str:50', 
                         'SurveyID': 'str:50'}}


with fiona.open(fileout, 'w',
        driver=source_driver,
        crs=source_crs,
        schema=new_schema) as c:
    print(len(c))

c.closed