Do you waken your baby to feed during the day

Noleen • Married summer 2015
My baby girl is 15 weeks and usually would be in a routine of feeding. She usually wakens at 5.30am and would have 5 feeds throughout the day, every 4 hours, 5oz each time. HOWEVER, she threw a spanner in the works and didn't get up until 7am this morning and her next feed was about 10.40 and she would be due at 2.40, but she's sleeping and I don't know if I should waken her still during the day or wait until she wakens? Any advice would be greatly appreciated 🙈