Such a thing as too much sleep?

I’m new to this whole baby sleeping through the night thing. My husband “sleep trained” her 5 nights ago (mostly just let her cry, I couldn’t do it) but now she’s sleeping through the night completely. Last two nights she’s gone to bed at 8:30 and slept until 9:30 and 10am today. Is this too long? Should I be waking her up earlier to allow for a morning nap and an afternoon nap? Leave her sleep as long as she would like? Any mamas have any advice I’d greatly appreciate.