I do the same or I edit the sentance it sometimes helps to know what to put. I have also noticed on several photos you will have different captions though in essence it is the same thing. I usually then pick the best description. I just find it helps to use the captions as a guideline but sometimes they are wrong so you have to watch it as sometimes they identify events or people incorrectly though they normally quickly issue a correction.
Hi snugs, It gets easier... I have a routine now that's seems to work well. I start grabbing photos in the morning and that way they're almost all in chronological order.