How do I access the depreciation schedules (C & E) from a past return? When I look at my past documents it isn't part of the pdf

Save a PDF now for the file with all the worksheets included if you did not save a PDF with all the worksheets in the past. 

Please follow the instructions below for a copy of your tax return after filing.

https://ttlc.intuit.com/turbotax-support/en-us/help-article/small-business-processes/access-return-e-filed-printed/L4lXubpQ1_US_en_US

How do I get a copy of a return I filed this year ...

Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show.  Click on the Year and Click on Download/print return (PDF)