I miss my Daddy

I’m very new to being a sub, and having a Daddy. We are online only, and he’s on vacation for a while with a big time difference, making it hard to chat as often. He’s given me lots of tasks to keep me busy, but I miss being able to chat with him as much. It’s making me anxious and worried that we don’t have that connection. I want to tell him this, but don’t want him to feel bad and ruin his vacation being a needy sub. I don’t know what I should do. Advice for coping in the meantime is appreciated.