Complex sentence: It was eventually retooled as a women's magazine and ran irregularly in this format, with publication from October 1921 to February 1922, September 1924 and April 1925, and February to May 1926.
Split into simpler sentences: It was eventually retooled into a women's magazine and ran irregularly in this format. Publication in the periods from October 1921 to February 1922, September 1924 and April 1925, and February to May 1926.