Nap time

How long should a 2.5month old nap? I feel like my baby might be sleeping too much is that such a thing?

The last couple days her naps have been around 4 to 6hrs. Is that too much? Is she starting to get her days and nights mixed?

Last night she went to bed at 8 woke at 10 back to bed till 4am. Went back to sleep at 5 woke up at 8 then back to sleep around 9/930 and is still sleeping (1230).

FTM so I'm not sure