Hi Kaya,
Thanks a lot! I'd say my love for the subject definitely helped my motivation to study haha but I still have all my A-Level stuff so I can tell you a bit about how I studied!
College is so different to secondary school because you have much more free time - it's important that you make the most of it and don't let it waste away! I had 3 hours a day (one hour for each subject) Mon-Thurs, scheduled anywhere between 9 and 4. In these gaps, I scheduled two hours of studying outside of class each day, and I decided what to study when based on my timetable for the week and when I would have work due in - e.g., I had Psych work handed out on Monday that was due for Wednesday, so I'd make sure to schedule at least one of my two hours on Monday or Tuesday. (Make sure to always schedule some healthy break times though!) You might need a little more or a little less than two hours, depends on how fast you work! I had to schedule 3 hours for my Politics A-Level because I found it particularly challenging.
Doing my work as early as possible meant I had that bit of extra scheduled study time to revise content we had already covered to make sure I stayed familiar with it. This is so important! When you get into your second year, everything you did in your first year will feel so far away - if I didn't have time to study past content during the week, I'd do it on Friday or on the weekend, but this was usually only in my second year. It's worth getting a diary and writing down all your past topics and seeing how you can spread them throughout your weeks to work at a consistent pace rather than cramming.
One thing that also really helped was past papers - looking over past papers shows you exactly what types of questions to expect - finishing diagrams, short answer questions remembering facts or criticisms of certain studies, and long essay questions where you'll need to remember several facts and evaluations are some examples. My teacher would mark these for us and give them back, and I used these to properly track my progress for different topics. But make sure you know what exam board your college uses as their papers are all different! I used AQA, so if you use Edexcel you might have to tweak these methods a bit.
Typically when we learnt about an experiment - e.g., Pavlov's dogs, I'd write down all the facts I could remember about it on a blank piece of paper, and then underneath the facts I'd write whether it was a strength or a weakness of the study and why. If it was a weakness, I always elaborated on what that means for the experiment (i.e., are the results still valid or are they so biased they have become meaningless?) and I'd write a small suggestion on how this could be fixed, if I could come up with one. This covered all types of questions I could be asked about the experiment. Free recall on a blank piece of paper will always be more challenging than answering exam questions, as the question itself will prompt your memory. This helped me feel like the exams were actually easier than my revision!
Also, if you like using flashcards, there's a free app on Windows called Anki which has been an absolute lifesaver for me and I continue to use it in my degree. It will change how often you see a certain flashcard based on how difficult you found it.
That's as much as I can really say without getting into specific content, but once you start your Psych A-Level, if you struggle with a specific topic I'll be here to help

Best of luck!
Alex