Hi, I am experienced with Shrooms myself. 1.5g is not a huge dose, I believe the dose is often 3.5g as a regular dose. However, they always reocmmend to start with a smaller dose and start low and slow.
Look on the 'Third Wave' website about shrooms and look into both a big dose and a microdose. The Third Wave is a very good website.
I have found that taking shrooms makes me less anxious rather than more anxious. More present and more connected with my emotions, and less 'spaced out'.
To support yourself, I recommend to have music on a playlist. There is a 'John Hopkins Psilocybin' playlist on Spotify. Here is more information about the playlist - psychedelics work well with music.
https://www.hopkinsmedicine.org/news/articles/inside-the-johns-hopkins-psilocybin-playlist
Make yourself a comfy nest! Ideally, wear a blindfold and headphones and breathe into the trip.
If you would like someone to be there with you and give you reassurance, over the phone/Signal, I would be happy to support you a little. I am quite busy with work at the moment, but I would be happy to be there. I am based in London, but could do it remotely on some kind of anonymous channel, so you wouldn't need to reveal your identity and you woudln't need to be alone. I have some training in counselling skills, so I would just try and listen and reflect back, and if you were getting scared, I would aim to reassure you.
A good friend of mine is a trained therapist and trip sitter. It's such a shame he cannot advertise his services publicly! I am considering tripping with him, as he is so well trained.
I was with friends when I first took shrooms and they were awesome my first time. I have sometimes foudn them a little scary, but for me they are an encounter with a daunting intelligence that is more intelligent than me, and that is what I find a little scary.
There are people who have bad trips, but it is rare to have long-lasting effects from shrooms.
Avoid them if you have schizophrenia or psychosis though...And I don't know re Bipolar. Please look into your own mental health condition and if it is safe to combine.
I am always happy to chat about pscyhedelics, which have been of great assistance to me, and you are welcome to PM me pre or post taking them if that will be helpful for you.
All best wishes, J