Murph
Keymaster
Post count: 918

From 2016 USAPL Rule Book (could not find a newer version:

The lifter shall face the front of the platform. The bar shall be held horizontally across the
shoulders, hands and fingers gripping the bar (a “thumbs around” grip is not required). The hands
may be positioned anywhere on the bar inside and or in contact with the inner collars.

So, it seems that a false grip is allowed.

I suggest watching the squat course and the grip section on the false grip.

Give it a shot.
16 weeks is enough time to see if it works.