Yes, this is possible. Match the new 3RI keypad dip switches to the old keypad's pattern to turn it into a 2RI, swap out the button kits, and then factory default the keypad. The factory default instructions can be found in Section 2.48 (Page 62/76) here:
https://www.lutron.com/TechnicalDocu...ry/045038a.pdf . Then you just need to address the keypad on Section 2.8 (Page 22/76) and finally assign the correct shades to the keypad in Section 2.24 (Page 38/76). If you need assistance with this, please call our 24-hour Technical Support hotline at 1-844-588-7661.