Wake for Night Feed

Karis 🇦🇺 🇬🇧
The last two nights by 5 week old has slept 6.5 hours and the 7.5 hours and I have ended up needing to wake her to feed as my breasts have been painfully full.
Should I be waking her or should I just pump a little milk to relieve the pain and let her sleep on?
Thank you for your advice!