fox forks. help/info needed

Sorry if this turns out to be a daft question guys but im new to this lark so bare with me.
My new bike and my older bike are both running fox rl series forks.
The new ones are 140mm travel with no lockout and the older bike ones are 100mm travel with lockout.
Can I lower the 140’s to say 120 or even 100 and can I raise the 100’s to say 120.
Reason being is I want to transfer my wheelset onto my new bike and dropouts are different on the forks and the lockout feature would also be a bonus.
Thanks in advance

Yes !.. Google & you tube are you’re friend !..

And you’ll need some travel spacers in 20 & 10mm,some fox float fluid & a pillow (fox terminology) ,& a shock pump.

Thanks buddy

Depends on the age & configuration of the fork-Not all Fox can be altered in the same way or by the same amount.