Phenytoin Concentration in Pregnancy

Hi everyone! Had a question regarding an Anking card from v12 (haven't updated in a while so might just be a me problem) It says:

What is a physiological reason as to having low phenytoin concentration in a pregnant patient?

{{c1::Pregnancy → ↑ proteins that bind phenytoin → ↓ phenytoin concentration}}

I was a bit perplexed so I looked into it and seems like the main reason for a lower phenytoin concentration in pregnancy is the fact that CYP450 enzymes increase in activity and this causes metabolism of a bunch of meds (phenytoin included) more quickly. Should I change this card to say that instead? Thanks!