Feeding schedule

My baby is 8 weeks old today. We’ve been feeding on demand, so we don’t really have a schedule at all. It’s pretty inconsistent during the day and she will eat anywhere between 1-3 hours. It’s different every day. Same for the night, although she gives us pretty long stretches then.

My question is, at what time do I need to start her on a feeding schedule and stop feeding on demand? I am scared that sometimes I misinterpret her cries and just feed her, and then she’s eating too much?

She’s breastfed, mix of nursing and getting breast milk in a bottle.

Thank you!!