Hi
@Nette.B, that is such a sad thing to hear - my heart goes out to you all. Is Dad able to respond on the video calls? If he gets confused with the interaction on a live call could you send him a pre-recorded family message perhaps?
Have you also thought of sending him a weekly letter (or a card with a message inside) with a photo (old or new - copies of photos that evoke old memories is sometimes nice) telling him what is going on with you and the family? Even if he struggles to read it one of the carers could read it to him and it will be something there for him. My siblings kids used to do that for my Mum and she really loved it (they lived a long distance away).
I can understand why it is breaking your heart - keep posting and stay strong.