Well with out seeing pics of them its a bit harder to say but are you seeing any yellowing or necrotic patches on the leaves? If you are id say its nute burn (shouldn't be nuting them anyways so i doubt its this). It sounds to me like its just simple over watering. I had the same problem for a little while and the whole plant just kinda gets droopy the leaves droop down and kinda form a claw. Just back off on your watering schedule a bit and see if your girls perk back up. As I've heard a few others say "It's very easy to over-love your plants."