Do you have suggestions for keeping daily contact with an elderly loved one besides phone calls?

My father lives alone. He’s 83. He’s fairly healthy but his blood sugar levels have been fluctuating lately, at scary levels. He almost went into a diabetic comma this morning and could barely test his levels. It was at 43. He doesn’t know how he was able to test himself. He drank orange juice, took his insulin, and was better by evening.

Long story short, we were trying to think of a way to contact each other daily besides a daily phone call. He doesn’t text. We were thinking through Facebook somehow? Do I need to get over to his home and show him how to text? We can’t do daily calls because I use prepay and my minutes are sparse.