baby movement changes

Xiomi • 🤰🏻30, married💎, mom of 2 👧🏻👦🏻 soon 3 👶🏻! Self employed 💡, God loving ✝️, Costa Rican 🇨🇷, Clean living 🚭
Ladies, I'm 31weeks today and the baby seems less active this last week. I mean I feel her at night, in the morning but she's definitely more still now. Do you think it's because she has less room or what? Have you ladies felt any changes in movement?