I think it'd be perfectly fine to engage with a Vajrayana teacher to see if it helps with what you're experiencing, there's no requirement to be initiated into a lineage and take practice vows or anything like that.
The only reason I mentioned a Vajrayana teacher rather than a western psychologist or even a teacher from other Buddhist schools is that these advanced visualization practices are something most Vajrayana teachers will have experience guiding students through. Which also means they'll be well versed in what to do when things go wrong.
The only reason I mentioned a Vajrayana teacher rather than a western psychologist or even a teacher from other Buddhist schools is that these advanced visualization practices are something most Vajrayana teachers will have experience guiding students through. Which also means they'll be well versed in what to do when things go wrong.