I have had this Monstera for about 9 months now and it was so healthy at the beginning. Its now winter and I have it in a warm room about 15 feet away from a south facing window. It had it about 2 feet from the window but moved it because the leaves started feeling really stiff and hard so I wasnt sure if it was getting too much sun. I put about a cup of water in it every week and a half and there’s a little bit of fertilizer that I put on it about a week ago. I have no idea if I'm watering too much or not enough or not enough food. Im completely at a loss. I have it in soil mixed with perilite and the roots don't seem to be mushy. Any advice on what could be wrong with my plant dying off? Some leaves are yellow and new baby leaves are browned up in edges before they even open up. I am at loss and soooo upset. I already lost one monstera.