You'll hear lots of different theories, Leash. 2 hours awake seems like a lot for a 2mo... but Natalie was always a terrible day-sleeper so I understand the frustration of fitting your baby into a 'set pattern' IYKWIM.
I would guess that if Jazz seems content then she's probably getting enough. As a pp mentioned, they are all different. If she seems overtired, cross, upset, difficult to settle, then I would think you'd want to try putting her down earlier.
It must be tough not having that clinic support. GL for your appointment on Monday