Question for fellow trans people with unsupportive family

So just for a small intro I came out as trans to my mother back in 2020 when I was 14, and at first she seemed very supportive and I assumed she kept it a secret but I then found out she told her side of her family and my older brother and cousins. Fast forward to now and it's just been years of on and off support from everyone apart from friends and supportive siblings/cousins. So I've just assumed majority of my mums side of the family will never believe I'm trans and my dads side has no idea.

I turn 18 in early September this year and although I don't have a job or anything, I still want to see doctors and get appointments about starting hrt or gender therapy. Unfortunately I'm terrified of doctors and can't go alone but also have no one supportive to take me (my brother also is terrified of doctors but could possibly still take me.)

I wanted to know what other trans folks have done due to their parents/family being unsupportive but still live with them. Also if there's maybe a way I could have online appointments with someone that would probably ease my anxiety for a doctor and then discuss matters in person later on.

Any advice or personal experiences is much appreciated :)

Edit: if this helps (or more helps me ig) I live in WA so any advice for WA specific is also great