BW, I didn't chart through most of my cycle and just left it up to the BT's. I found the whole thing daunting enough and enjoyed not having to worry about taking my temp at the same time each day. During this FET cycle I have just been taking my temp for the last 5 or so days, as it's always quite consistent and will give me the heads up if AF is going to arrive.
Personally, I wouldn't worry about it as it can just add to your stress levels!!