hi everyone! so I was gifted an avocado tree that was grown from the pit and potted and it was doing very well until a couple weeks ago. I noticed the leaves started browning a bit so I cut some off (I now know this was a mistake 🤦🏽‍♀️) and in the following weeks the stem began to turn black at the base, and then the top. I got advice from a gardener I know who recommended I trim the stem as I had a second stem sprouting from the pit, in the hopes that one would flourish. it’s been about a week since I did this and the baby stem isn’t showing much progress, wondering if anyone has advice about this specific issue or avocado plants in general? I literally cried when this started happening as I genuinely love this tree and I’m not sure where I went wrong. I water when the soil begins to not feel moist and because I don’t have much natural light I purchased a plant light.