There is a good thread about Stillmans in the Buddy section, here. http://forum.lowcarber.org/showthread.php?t=445056

All rules, comments from users over the past years, though I don’t know any now. Stillmans is both Low Carb and Low Fat so doable short term, but I do not believe it a long term sustainable diet. It is difficult if you have been doing a higher fat Atkins/ Keto before and use to eating good fats,
You might also consider an Atkins or Ketogenic diet, zero carb or adding intermittent fasting where there are more current users and active discussions.