My clinic only does 2, and because I did a BT at the GP last time, they only did 1! So I had my GP one at 9dp5dt, and then they did their scheduled one at 14dp5dt - and that was it until the scan.
I've noticed on here that there seems to be a big difference between the amount of testing different clinics do.
Mine doesn't seem to do a lot on the BT front. For example, last pregnancy I was told to stay on the progesterone pessaries for the whole first trimester. Other ladies wrote that their clinics tested progesterone levels and they were told they could drop the pessaries once their levels were okay. Mine doesn't test for it.