Under-stimulated or over-tired?

I have a 9 month old rescue (unknown mix of working breeds, we think JRT pointer mix)

Our current schedule is about this

6-8: walk (maybe twice), play in yard, meal time in puzzle, rest of meal is used for training time, play with toys

8-12: she is crated while I wfh

12-2:30(ish): walk (maybe twice), toy time, small training session, kong

2:30-5: she is crated while I finish my work day

5-8: walk (maybe twice), play in yard, meal time in puzzle, rest of meal is used for training time, play with toys [she is crated for 30ish minutes while my family eats dinner during this time]

8/8:30: sleep through the night in crate

I know this sounds like a lot of crate time, but she can’t be trusted elsewhere while I work from home yet. My mom comes home at noon and helps watch her then, but once she becomes overbearing we send her for her second nap.

Our walks are a bit short right now, which is why they’re so frequent. We typically just go down the street or around the block, which is maybe 1/2 mile if we go around the block. I’d guess we’re barely walking a mile total. I’d like to work up to 2-4 miles, but she’s not fully leash trained yet and she lunges at cars. The short, frequent walks also help her paws tolerate the cold.

Important to add that she does not sleep outside of her crate. When I put her in she rarely cries. If she’s been in there for a bit and she hears me go to the bathroom, she’ll whine for a couple of minutes but that’s about all.

Is it normal for her to still be overtired when her bedtime comes around 8/8:30?