Given conditions it likes, it actually can create quite a bit of vegetable matter out of sunshine, air, and water. The magic of plants! I had one that came in a little cup, very small. I set it in my bathroom, with nothing but indirect filtered light from frosted bathroom window. I never did anything to it except add chlorinated water from the bathroom tap (I know they will tell you not to do that). Never fertilized or anything. It got to be 4' tall bushy, big leaved. It was top heavy because still in the little cup and totally outgrown the space it was in. So I put it in a bigger cup out on my deck where it got direct morning sun and it promptly died. (Don't mess with success!
I would just be patient with yours. If it is coming back it will keep growing.