Applying for L2 in parallel with L1 extension.

I’m on a L1 visa with my I-94 expiring by the end of October and I’m filing for an extension. My spouse is on her own L1 visa.

While I file for extension of my L1, is it possible for me to file a change of status from L1 to L2 in parallel as a backup ?

If yes, assuming the L2 change of status gets approved first, can I continue to be on L2 and later if my L1 extension also gets approved, can I change back from L2 to L1 ?