I do something similar. I’ll do excerpts, but highlight them a different color to let me know they’re copied text. Then I’ll start writing my own version. At some point, the excerpts go away (perhaps leaving a reference, perhaps not).
I’m writing all my texts in the iOS enviroment. iPad 2018 with Targus VersaVu case and Apple Wireless Keyboard (2011) and iPhone 6S Plus. I also have Samsung Galaxy Note 8 as a daily phone, so I’m using Evernote for notes for my projects when I don’t have my iPhone with me.
I don’t miss anything from my laptop during writing drafts. Well, maybe then when it’s time to send my manuscript to publisher, I’m using the laptop for finishing the layout in the .docx file, but everything before that is done in the iOS. I just can’t write anymore with my laptop, iOS has something more magical, it gets me flying with all the minimalism.