Over tired

Anyone else’s baby gets so overtired they won’t eat? I’ve been battling with my baby girl for weeks now to try and get her to nap during the day or she just doesn’t want to eat. She has quite an early bed time and normally is asleep by 6.30-7 so her last bottle we try and give at 6pm. But sometimes even trying to drag her out till this time before going to bed is hard. I honestly think she’d go down at 5 if I let her. It’s getting to the point where she’s so tired by 6 she won’t eat. She’s not a great napper and I have really been trying hard to get her to go off in the day but she fights it so much. I feel awful as I get so frustrated with her and I know it’s not her fault. Parenting is hard work 😩