Sleep Concern?

Samantha👧🌈🤰🏻

My little girl (4 months in 3 days) seems to be plateauing at 13ish pounds. She’s eating 5 ounces every 3 hours, but she sleeps solid through the night. Like 9-5 sometimes even 10-7. Is her sleeping through the night keeping her from gaining weight? Do I make a bigger breakfast bottle even though she spits up a lot? Do I wake her up in the night to make her eat?

Please help me or tell me this is normal.