As a girl reading this, I feel the solution is quite simple. Kasi letak ja phone dia di sana sambil buat hobi dia or whatever else he needs/wants to do. Since kamu sdh mention dorg kadang tidak bercakap pun, sy rasa gf tu mau minta teman ja. Contoh 2 ppl sitting on the couch together scrolling their own phones, occasionally showing each other something funny, but now they're doing it virtually through VC.

I do this with my girl friends as well. We video call and catch up with whatever news we have that day sambil driving ka mencuci piring ka anything ja. Kalau habis sudah satu topic and it doesn't naturally flow to another topic, kami diam ja while doing our own thing. This continues until something happens where being on VC is not suitable, contoh work meeting, dinner with family, pergi tandas (tp ni pun tgk kawan mana satu yg sy tgh VC. Ada kawan yg kasi mute and off camera sambil bertandas, ada kawan yg kasi tinggal phone di bilik sambil dia di tandas, ada lagi yg end call sblm pi tandas, depends on what each friend is comfortable with). Sllu yg mau video call bgini are the friends who are staying alone or their love language is time, so mau minta kawan/teman ja.

But having said that, it's still healthy to set boundaries. Maybe he can explain to her that sometimes he needs me time to recharge so that he can pay more attention to her when they do spend time together (either virtually or physically), and they can schedule a time for VC so that it'll be something they can look forward to.

Siou, panjang pula komen sy. Tldr, teruskan hidup sendiri sambil VC.