WeightNot offers a vegetarian version, so yes, this diet can work for you too.  As you suggested, there are substitutions for animal protein that are recommended and have been successful for other vegetarian WeightNot members.  The pace of loss can be a bit slower for vegetarians, however due to the higher caloric levels for these protein substitutes.

I’d like to still stick to my vegetarian diet during weight loss and am wondering if WeightNot allows for this—perhaps with some substitutions?