Cholestasis a second time MFM

I had to see an MFM my first pregnancy around 33 weeks due to Cholestasis. They ended up doing 3D ultrasound instead of a regular scan. This is my second pregnancy and I’m 27 weeks and going to a different mfm. Will they do the 3D ultrasound again? I always drink water but they told me to make sure I’m very hydrated.