We are currently feeding her 1/2 cup of royal canin puppy food for yorkies younger than 10 months , but yesterday my sister felt like feeding her one extra 1/8 around 7PM since she ran a lot with our old golden, and she also said that it was 1 month since the vet saw her so she might need a bit more of food now that she got bigger (She's already past 3 LB despite being slightly past 2 LB a month ago, and btw her last puppy shot is scheduled today). This morning she went to the bathroom at the usual hour, but doesn't want to eat her breakfast (1/4 cup of food that she usually doesn't finish in one sit so we save some for later for an inbetween snack before her lunch at 5 PM). Other than that she's acting pretty normal and in the mood of playing with her toys and running around.
I hope she just has a full tummy because she ate more than usual yesterday, rather than being a sympton of something nasty like Parvo.