Hi, so I am still pretty new to house plants so I am looking for any tips and tricks that can help me save this Dieffenbachia. She was a clearance rack find at Lowe’s with a lot of dead leaves. I used to repot with just plain old miracle grow soil but have recently switched to fox farms(this is happy frog) with added perlite and orchid bark, I also added Bigfoot mycorrhiza around the roots. It’s a NC winter here now and I have all my plants inside with grow lights but I am not seeing any progress being made in root development or new leaves. What am I doing wrong? it’s been almost 2 months