I did my first Whole30 in February of this year, and I didn't have any big changes in my weight during that time either - I lost about 4 pounds, which mostly seemed to be water weight. My clothes fit slightly differently but I didn't drop a size or anything. However I was feeling so great that I decided to mostly stick with the Whole30 way of eating - only bringing occasional alcohol and all natural sweeteners back into my diet. Over the next few months my body started changing, and with my energy levels increasing I was able to get up early and work out. I lost another 6 pounds between March and May.
This is all to say that the weight loss benefits you're looking for might just require a bit more time! Slow weight loss is healthier and most sustainable after all, be patient with yourself I wish you all the best in your journey!