On a card UI with less than usual text, should I leave the card size as is, or make the card smaller?

I'm making a timeline with multiple card UI elements, and I'm curious as to what I should do with the card size (in particular height) when the subheader text is only a single line long as opposed to the usual two lines (see image); it leaves kind of an awkward amount of space given the relative size of the card.

Should I leave the card the same size, or should I make the card smaller? The smaller card looks a little "nicer," but my concern is that cards being different sizes makes for a visually inconsistent UI.

Your thoughts and feedback are much appreciated, thanks in advance!