Compulsion to Call

I have a bad habit/compulsion of calling my grandparents multiple times a day. The odd thing is, I've had the same thing happen to me where a disabled friend called multiple times a day so I can understand their annoyance that I call so frequently especially if I only have nothing to say.

I think it's a fear that life is short and my time with them is limited, and I have always been attached to my grandparents and have always had a great relationship with them, but I realize the constant phone calls can be a burden for them.

I've been working on friendships, just started a journal, and keeping busy but I still feel a compulsion to call them every day. I was thinking of limiting the calling to once a week every Friday? In my head that seems like a long time to go without calling (considering I call multiple times a day), but if I only call once a week I have a week's worth of things to talk about, not just the first thought that comes to mind because often times I have one thought in my head and then I have nothing to say.

Ideas on how to cut back on the calling?

Can you call them once a day? Or every few days? Maybe send them letters?

Um post what you would say to them here in this thread; wait 5 minutes; read what you just posted; if it seems important after rereading it, go for it? Or draft (but don't send) an email/text, if it still seems worthwhile when you reread it a few minutes later, send it or call them and tell them?

Even if it annoys them, it must make them feel good that you care so much!