Using only self-striping sock leftovers - only listed a few because I can’t remember them all.
Squares are 6”
Modified version of the pattern - my squares have a 2-stitch X (33 stitches a side)

February 13/13 - 10/60 squares done.
October 9/13 - 16/60 squares done.
October 13/13 - 24/60 squares done.
October 30/13 - 30/60 squares done.
November 3/13 - 36/60 squares done.
November 8/13 - 40/60 squares done.
November 18/13 - 45/60 squares done.
November 23/13 - 50/60 squares done.
November 27/13 - 54/60 squares done.
December 1/13 - 60/60 squares done!!!!