Short horizontal wet vent for shower drain below slab

[Bigbrotherjohn]

Wondering if this horizontal wet venting for my shower drain is ok? The sketched diagram shows the pre-renovation configuration on the left and the new one on the right.

Do I need to rotate the 45deg wye shown in the middle of the photo?

Thank in advance for any advice.

 

[Terry]

You can use the lav to wet vent the shower if it's run with 2" pipe.
You can also wet vent the toilet with the lav if run in 2". I don't like the flat vent for the toilet that is unwashed.