it's happen to me , and I've gotten worried and brought it up to my ob s attention and she said it's normal, they usually don't start being constant active until 28 weeks
The same thin happened to me. He was so so so active and then I didn't feel much movement. My doctor said he had turned around so his back was towards my tummy. After a day or two I started a little more movement but it was much stronger. Try drinking cold water and laying down. I also took a flashlight and stick it to my tummy and he would go and kick the spot where the light was. I think you'll be okay but if u get too worried call your doctor 😊