2 months old eating less

Iqra 🌈 • Lost my baby girl at 24 weeks (Anamta 👼) 25/06/2021 Rainbow baby Inaya 23/05/2022 Missed miscarriage 28/09/2023

My baby girl is 2 months old. She got her first vaccine shots 10 days ago and had a fever. Since then she isn’t eating well she drinks only 60-70ml out of 150 and starts crying between feeding. She has colic and reflux as well. And suddenly she started sleeping a lot for past 3 days. Is this normal?