I would go in. Your baby is sleeping 95% of the time but movements actually increase not decrease. If she normally moves a lot and hasn't been it's better to go and make sure she is doing ok.
They told me not to worry that the further you get the movement can decrease because the baby is running out of space my Dr said as long as you have 10 movements in 2 hours the baby's fine less than that to go into the hospital or at least call them
Put a tight belt or band around your belly. . They hate that she should start moving or kicking it. That's what my nurse told me if I ever became worried about movement