Anyone else’s baby?

Anyone else ever feel like they got their babies active times and non active times figured out and then they changed?

I’m 26.5 weeks and the last 2 weeks babies active time has been night times, and more quiet during the day... the last 3 nights she hasn’t been active during the night and I’ve felt her during the day a little but she hasn’t been as active as she has been. and now I just feel like I have no idea if it’s something to worry about or if it’s normal for their schedules to change and become less active?