I just started my yearly Alternate Day Fasting program I run during this time for 6-8 weeks to drop the holiday weight I gain because its my temporary hiatus where I live a little and let my diet slide. I've pretty much perfected it after 4-5 years of doing it, it creates a near perfect cycle of optimal fat loss through hormonal manipulation and then right before the body gets ready to lower its effectiveness, you have an all out cheat day once a week to rev up your metabolism/thyroid and reset Leptin back to optimal levels to start the cycle all over again the next week. It's actually a tweaked version of a John Romaniello plan, but there were some things I didn't like in there that I felt could be improved so over the next few years of doing it, I worked out some kinks.
Last year I dropped 31 lbs in 6 weeks and 36 lbs in 8 weeks following it with very little loss of muscle---and I wasn't "fat" by any means...around 16% BF when I started...people who have more weight to lose would probably get even better results.
So far after 2 days I've dropped 9 lbs(probably 5 lbs of it was inflammatory weight), but I can probably get to where I need to be by the end of January...17 lbs is nothing to drop for me.
Also---Low Carb/Keto diets are completely unnecessary. From personal experience the only thing you accomplish from them is losing significant amounts of strength and looking flat due to loss of glycogen. Carb Cycling will give you similar results to Low Carb/Keto diets without the loss of strength or looking flat.
4 Day Rotation Diets will also greatly lower your inflammatory weight you are carrying by preventing and relieving food sensitivities as well. I've gotten tremendous results from following them. This will be the first time I'm combining a 4 Day Rotational Diet with my Alternate Day Fasting so I'm excited to see how that works together.