Bathroom Remodel Drain/Vent Configuration
The fact that the sink is technically being individually vented back to the 3" vent is throwing me off.

I don't have a copy of the IPC 2018 code and I'm in Canada, but I believe the codes are similar.

Is there any way to extend the 3" portion closer to the sink so that you can still run the fixture arm with only 135° change in direction? You can then offset the vent back to the existing location once 6" above the flood level rim of the sink:



With the above alteration, this would be a clear wet vent.

A few additional notes:


The fall on the fixture trap arm can not exceed that of the diameter of the pipe. So for 1-1/2" run with 2% grade the max length would be 6' and 2" pipe would be 8'.
A fixture trap arm cannot exceed 135° change in direction (except for a toilet which cannot exceed 225°).
The length of the wet vent is not limited.
A toilet must be the last fixture in a wet vent (or connected with a symmetrical fitting).