Anterior placenta ladies

I am 35 weeks tomorrow and earlier this week I went from feeling my daughter quite regularly to barely anything at all and when I do feel her it’s very light. I haven’t had this issue since I started feeling her in the early to mid 20 weeks. What has changed? Could she be lower and more centered with the placenta? I’m having nsts done now because of it. The one I had done Tuesday I felt her 4 times and they registered 40+ movements. Anyone else experience this?