Your in the same position I was in in 2018 with the WLTP saga and the VW Touran being one of the last VW cars to get its ticket to sale. Delivery time went from a long 5 months delivery time to 9 months.
I was prepared to wait 5 months and took that on board but then after 3 months being told it’s 9 was the last straw as I could no longer lift my scooter into the car nor would my wife’s knee hold out another 4 months on top of the 5.
I cancelled and got a KIA off the shelf but with corona everybody is in the same boat so not sure going elsewhere will work for you and the downside is I think the Tiguan is made in Mexico if I remember right and reading a few weeks ago that Mexico had not reached there peek with the virus so factories wont be flat out yet and is why VW can’t say anything because they don’t know.
It’s a hard call to cancel or not I know I’ve been there.