Applying for I140 - Wife COS from H4 to F1

[HelpMeForum]

Hello,

My wife applied for COS from H4 to F1 very recently. I'm on H1B, recently got labor approved and planning to apply for I140. I remember my lawyer saying that I should include my wife into GC process in I140 stage.

Now, If I include my wife in the I140 stage, does it affect her F1 visa approval? (normally COS to F1 takes 3-6 months)

Do I even include her in the I140 stage? Can she join the process in later stages?

Thanks.