I honestly think this is an overwatering. The OP said he has watered "every 4 days".
When overwatered, the leaves droop, but it's an elongated droop(slow, progressive, from stem to end of leaf). When it's underwatered, it basically flops right from the main stem.
If it continuously is overwatered, you'll start to see all sorts of nutrient problems. These problems can only be fixed by letting it dry out first, then watching the plant for a few days... and adjusting from there.
Since you have her in a fabric pot, if you got a fan that can point straight up and act like a table... put the pot right on top of the fan and turn it on high for a full 24 hours...
I did that the last time I overwatered, and my plant bounced back the next day.