Hi Peachespoe,
When DD was at your LO's age she was nursing 6 times a day on a very flexible 4 hours EASY (7 am, 11 am, 4 pm, 6 pm and 8:30 pm).
When you say that your LO shows the sign that she wants to eat, when does it happen? It seems to me that she could be snacking when she asks for a feed after 1.5 hours from the last feed. At her age, she should be able to stay longer (at least 3 hours) without a feed. Have you tried not feeding her? What happens?
IMHO, you just need to tweak this feedings. Try to avoid slow wean if you can keep feeding her.
HTH
Hugs
Lidia