The place where I learned to do deep meditation also had a strong emphasis on self-pacing. Maybe that would help reduce these kinds of negative experiences. With meditation, more isn't better, and it's important to stay grounded.

(Note that I rarely meditate anymore, but it did help me through some difficult times)

https://www.aypsite.org/38.html - self pacing

https://www.aypsite.org/13.html - deep meditation