You were nearly there, code below shows how to do it as requested.
However, You are only eliminating the buttons from your original Project but you need to eliminate the Text Boxes and Arrangements too, otherwise the Project will remain too big to compile/Build.
Only one thing, when next Textbox Got Focus, Text in Textbox1 does not stay, as soon as you touch another Textbox the text in Textbox before changes to empty
EDIT: When Textbox is set to Multiline is works !!!
Its about 250… I know its a lot but there is no way to reduce further as theres a lot of different information in every Textbox (will be filled when downloading a csv file, user can edit them and upload again.)