You can use whatever baseline you'd like, but regardless, you'll have to monitor your weight at whatever total calorie consumption you choose. For example, you could grapple a 2500 baseline, ingest...
There really is no 'perfect' math when it comes to each individuals BMR. It's just trial and error to find out how many calories you cut, maintain or gain at.
Kidding aside, just let your system recalibrate itself naturally. No need to rush things, especially after being sick. Up the calories slowly thereafter.
It's definitely trial and error when it comes to supplementation and diet. Regardless if a rep responds, it's best to discontinue use if it's having this effect on you and opt for another protein...
You've got the mind set it seems, but the discipline needs work so as to prevent the binge-fest. Try an association or psyche yourself out to help you not consume the food that barely has any...
Likewise, from what sources I could find, it's more beneficial to rest and let your body pool it's resources to fight off the illness/infection instead of stressing it even more inside the gym.
It is fraudulent and very disturbing to think that the majority of doctor's are more interested in a bonus/perks from shoveling in as much drugs down a patients throat then they are actually trying...