light cream in my coffee still ok on fast?

so I just discovered that when you order a coffee at Dunkin and ask for heavy cream what u get is extra ‘light” cream…
they don’t carry heavy cream booo….who knew??
is this still ok on my fast? I use the coffee to keep my eating window between 12-7

if just light cream ok? if no…….

what if I add some heavy cream to that?

thanks a mill