Edie's never been a big eater, but for the last few days she's completely gone off her lunch. She eats breakfast and dinner quite happily and seems well in herself; there just doesn't seem to be a time in the middle of the day when she feels like she needs a meal.
She's only just turned five months old, and I was told that puppies should be fed three times a day until six months, so should I be worried, or should I just let her skip lunch?
I'd cut out the 3rd meal for sure. She's telling you 2 is enough. I usually only do 3 meals until they are 3lbs or...if they're not eating well with 3 meals a day (but I watch for the first few days in case they are prone to hypoglycemia). But it definitely sounds to me like 2 meals would be enough for Edie.
I agree with Heather. As long as she's eating her other meals, you can definitely remove the third. You can always give her a little snack or treat in between if you feel that she needs it.
I use Ike's lunch meal as treats through the day, when he is a good boy, so he still gets it but just 1 or 2 kibbles at a time. He gets fed in the am and evening also.
How Many Meals Per Day?
I usually only do 3 meals until they are 3lbs or...if they're not eating well with 3 meals a day (but I watch for the first few days in case they are prone to hypoglycemia). But it definitely sounds to me like 2 meals would be enough for Edie. 
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