I am very interested in a description of this “trolloc”.
If you need help shapeshifting, I would recommend Wyverns guide.
I try transforming a lot myself, and I’ve found that focusing too hard on oneself tends to cause the dream to destabilize. Dream stabilization is a priority. Don’t ever frustratingly force a transformation. It probably won’t come out, and you’ll likely wake up.
Now, I’m mildly confused by your original post. Wyverns guide is primarily for physically shapeshifting, I don’t think it’s much for mental shifts. While you can probably inhabit a bird body pretty extremely accurately after practice, I don’t know about getting birdy thoughts in there while retaining lucidity.