Just Nurse her from that side (if your breasts are not too hard...)... or to avoid getting hard as a rock and pain... self-express it.... in a warm shower.
If a breast is hard, and engorged, a baby cannot latch on, well.
In the beginning of breastfeeding, engorgement happens. Your body will adjust too... by 6 months old, there will be no engorgement, or leaking usually.
Your supply, is changing... the older a baby gets, their sucking/intake/amounts changes too. Even if you can't 'see' it. Output reflects the baby's intake... AND a baby will often do what is called "cluster feeding" in which they NEED to feed every single hour, they get hungry and it reflects growth-spurts, which in a newborn, occurs every 3 weeks. So, ALWAYS feed on-demand.
NOT by a schedule. Your body/milk output, has to go with your baby's growing and intake/hunger needs.
ALSO, per each feeding session, nurse from both breasts. That is what I did and what my Doc and the nurses told me to do.
My kids as babies, DRAINED each breast, per session.
all the best,
Susan