When doing the 19/5 and Keto is it ok to have a bulletproof coffee in the morning. So it would look like 7pm-8am fast, bulletproof coffee until 9, then 9am-2 fasting. Will this generate weight loss? During my feeding time of 2-7 I eat about 1600 cals including the coffee (cals within the Keto macros plan), and I workout mon-fri. Is this still fasting?