Advice please 🙏

My little girl (7.5 weeks) drinks her bottles throughout the day/night absolutely fine, but when it comes to her last feed of the day (around 9/9.30pm) she drinks a tiny bit, but is always too tired to ever finish it. She sleeps through usually until around 2am, but I'd like her to finish that bottle. Any reccomendedations?? I change her nappy half way through to try and wake her up, but it doesn't work.