then 10 min a day it is. and think ahead about interesting things you will tell him about: what your daughters are doing; interesting things you did; ask his opinion on something in the neighborhood or something in the news; etc. you know, the same things you'd be talking about around the dinner table if he were home.
nowadays H and I use IM a lot because it doesn't have to be continuous. you can talk for a few minutes, then go back to what you were doing, then put another question or remark into the chat box and continue doing other things, maybe he will see it a few minutes later and answer then. I compare it to sitting in the same room, each person doing their own thing (maybe one reading a book and the other watching tv) and from time to time have bits of conversation.