Fetal movement changes

At 25 weeks I noticed babies movements became less frequent and not as strong. I ended up going to L&D and she was perfectly healthy and kicking up a storm of course. But since her movements have settled back to being little squirms and pokes here n there. I do have an anterior placenta which makes it harder to feel a lot of it but up until last week I’d been feeling strong movement. Any idea why this could be? I can’t help but worry constantly. I drink juice and different things to get her moving and it only sometimes works. I have an at home doppler I use to check her heartbeat and it sounds strong, just worried still.