You can absolutely track your water - just search for "water" in your food diary or scan the barcode of a water bottle (if available) - you can enter in how many oz you drank and you could even modify the title of your water entry to include the time that you drank it. It will give you different options like tap water, bottled water, carbonated water, etc... I don't think it really matters which one you choose.
Someone who is busier than you is working out right now.
There will come a day when you can no longer do this. Today is not that day.