Is it possible to learn to draw in three months? Yes, it is. Why? Because I know you can and I believe you can do it. You just need to stay persistent and don't give up. That's all.
I like your new art very much. Though I think that this woman looks a bit tired. You did a really nice job detailing her face. The only part that feels like a lackluster is her hair.
Anyway, will be waiting for your next work 🙂