I have a wonderful and healthy lab puppy is two weeks under 4 months. She has always been a fussy eater - loving anything I eat and not even looking twice at her own food! She really isn't bothered about 3 meals a day. She eventually eats breakfast and tea but hardly ever eats lunch. I feed her Nutro Puppy Large Breed. I've been waiting for her to hit 6 months before taking her down to two meals a day but somebody told me that I could do this around 4 months. Is this true? And if so, should I start her on adult food or keep her on puppy food?