it's easy tbh. Of course you're not gonna talk for 4 hours straight. For facetimes ususally it only requires you to turn on the video chat and put it somewhere in your room. Maybe on some times you put it closer to your face for talking, but mainly you just eat, read, or do your things while facetiming. The idea isn't about talking much, but making her present with you in your room to accompany your day. And you can also facetime with her at night as you both fall asleep, while seeing each other's voices to close the day so you can meet again in your dream while sleeping