I've already taken 1st year biology in university and it was tough.
. . . .
I never liked school . . . .

I've done it before and got really stressed and did very poorly.
I say go to the 2 year program! Just listen to yourSELF.

I LOVED school; the thought of ending the school structure and working terrified me. I went to college and majored in something I LOVED (Mathematics). It was SO easy; I seldom had to spend time beyond the homework. Then I went to law school. From 4th grade, I wanted to be a lawyer. I never really went through the thought process as I grew up.

It was NOT for me; even though I stuck it out, it was and still is the worst 3 years of my life. I spent ALL my time studying, didn't understand a lot of it, dropped from a straight A student all my life to a c+ / c- (that in itself was a shock to my self esteem!) Once out of law school, I worked in a law office and hated THAT, too! I was pretty stubborn, and stayed on a course when it would have been better for me to stop law school after that first semester and go back into Mathematics for a Masters. Bull headed; that's me. (Oh lordy, does this mean I'm gonna add a bull to my pet menagerie? )

The one and only way I could rectify the mistake was to RETURN to school and get a Master of Laws in Taxation (loads of Math in Taxation! People often are surprised to learn the advanced algebra involved in capital gains tax theory; and the geomtric timing theories involved in tax collection from the governments' viewpoint). I LOVED it, returned to being an A student and fell into work I enjoyed. It took lots of time, money and personal "pain."

So to me, reading what you have written, you TRIED the bio stuff, didn't like it, and knew to leave. Stay with what you have learned about your likes and strengths!