Lessened movement?

Hi ladies,
   I'm 29w4d and feeling less movement today than usual. Movement had been pretty obvious and specific until last night; today it's been much more subtle and it's making me nervous because it's breaking the routine. She's not really increasing movement after my doing things like drinking cold juice either.
   I keep reading that as babies grow, movements feel different as she has less room; have any of you found that to be true? I'm planning to call my midwife if my little lady doesn't ramp up her kicks by tonight...