Hi. Fellow bruin-transfer class of 2016 here (as you can see by my profile pic 🙂).
First of all, Im assuming you transferred from a CC that was on semester system, right? This is why I dont really recommend overdoing it your first quarter. I did, and I regretted it. There was a semester at my CC where I took General Chemistry, Physics, Calculus 2, and Biology at the same time, and I managed to get a 3.5 gpa that semester. That isnt going to happen at UCLA unless you have no life and dont sleep.
So heres what I recommend: This summer, take the first 6 weeks off. Have fun, go enjoy yourself. After that, sign up for a summer session C class at UCLA. I recommend one of the LS classes if you havent taken them yet. Im pretty sure they changed the LS series starting this year. Its no longer LS 1-4, but its going to be LS 7A,B,C. I have no idea how different these classes are from the old LS series, but one of the professors ive spoken to says its going to be in flipped-classroom format from now on.
Anyhow, take an LS class over the summer. That way you will get a feel for the difficulty of the science curriculum, and this is how you will hit the ground running.
In the fall, also limit yourself to 1 science class. They wont let you take more than 3 classes total, and to be honest, 3 classes will still be alot of work lol. Absolutely do not take more than 2 science classes in 1 quarter. Taking more time and having a higher gpa is better than finishing everything quickly and having a bad one.
These classes do have some competetive premeds in there, and there will be times where it feels like these people know everything the Professor is talking about without breaking a sweat. Just know that this is not the majority, and 90% of the people in the class are just like you and me and have no clue wtf is going on. And yes, as MoreJedi said, go to lecture and dont rely on Bruincast or else itll be midterm week and youll still have 10 more to watch... and yes I speak from personal experience :/
If you want to, you can PM me if you have any more questions 👍