Is there a way to add the Hydration widget to Vivosmart 4 device?

I'm not taking a phone or tablet with me while exercising, so I have to remember how much water I drink and input numbers in Garmin Connect when I'm back home.  If hydration was on the band, numbers could be updated all day long while exercising. 

Right now unfortunately I'm not using that feature which I think is part of exercising!  Maybe there's a way that I don't know!

I would appreciate help!  Tks!