Hello, I bought these 2 cuttings of Rhaphidophora tetrasperma about 4 months ago . The seller had them in this small pot. In the first couple weeks, the leaf tips turned a bit crunchy. I thought it was because of too much sun and moved it so that it is next to a very happy Anthurium- decent amount of indirect sunlight . The leaves have stabilized,but neither of the leaves have grown at all. Both of them are well rooted when I try to tug at them. Does anyone have any suggestions on how to help them grow?I am attaching a few photos. Thanks.