Telling my AP that I want to change my major...

Previously a Architectural Engineering Major (I chose this major because my dad told me to pick a major that would pay me 65000+, and it was also what I was mildly interested in) going to a community college, I want to change to Psychology. I hated AE for 2 years (been going for 3) and am supposed to transfer to another college next semester. My parents also want me to apply for an intership this summer. Truth is, I loved Psychology (interest started in Middle School, peaked in Highschool) and want to get a connected degree (Human Services to Psychology). I also have ADHD, so it's harder to concentrate and complete assignments on time (sometimes I need reread a page dozens of times to understand it). I also noticed that I was so interested in it that I didn't burn out during the middle of the semester like I usually do and managed to hold until the last two weeks where I slowed down (still passed).

My APs hate each other and only stay together for my younger brothers (youngest is 10). My AF is emotional distant with my mom (also his mother treated my mom badly and he did nothing). My AM hates that my father (who works 7 days a week 8-10 hours) doesn't do considerate things (washing dishes, loading dishwasher, etc.).

My AF is already mad that I'm taking longer than the "needed" years (taking 5 years instead of 4) to finish my study (they don't understand that credits are what counts the most). My AM mentioned a few times that once I graduate, to get an apartment and take her away from my AF. Though, she (probably calmed down after seeing the rent prices) hasn't mentioned it for months.

For reference, my mental health got so bad last year (summer through fall semester), that I got suicidal to runaway to deciding to stay after speaking to a counselor (college provides mental health service). There's also finances to consider. My father constantly asked if I applied for a loan (which I have not done yet). I was planning to pay it through, semester tuition is 2000-2500 for full-time students. There is also the fact that they want me to take 4 classes a semester, something I now understand that I really can't manage, 3 is my max. But they refuse to learn about or see the symptoms of ADHD.

I know I can't delay this much longer and need to tell them. My original plan was to email or text them this information while I was at work or something. Since I've been keeping this to myself, my anxiety and stress level is through the roof. Any advice appreciated.