I used this when my boy was a baby and if he was underweight I would increase his food and if he was on the right track I would keep the same amount.
It’s good to have a look at the dogs behind your pup to see how the dogs in his lines turned out full grown if they was compact, slim etc.
I feed raw and used this guide
An adult dog needs around 2 – 3 % of their total body weight each day. To maintain your dog's weight 2.5% and to fatten up a skinny dog 3%. For a porky pooch it is recommended to reduce to 2% to help slim. Puppies may need up to need up to 8 - 10 % of their bodyweight to aid growth.
Thanks so much for your thoughtful response. Regular vet checked her ears which looked pretty good although she gave me some additional ear medicine. She also thought it might be allergies (I know mine have been killing me this year). Since the regular vet is a bit of a trip (about 30 minutes), I am set up to have a new patient visit in early June with another well regarded multi vet practice about 10 minutes away. A perfect time to get another vet's opinion on the new behavior assuming that it still occurring. Olly has been boarded at her favorite kennel for a week because I was ill and afraid I might be hospitalized. I check on her via their webcam during the day and she seems perfectly content. I asked if they had seen any head shaking or flight during her but they said she seemed normal. I think her aim is to drive me nuts. She is succeeding!