How do i check how much time i spent on Wonderland servers only?

You can join ourDiscordserver to check your in-game connection time.

We've recently reset it but to see your old in-game connection time type wln!p0 [Steam ID] and for the newer in-game connection time type wln!p [Steam ID]
To check for your total in-game connection time you can type wln!h [Steam ID]