Forgotten EFI Password, HELP! (2010 Model)

I'm only 19, my parents purchased the computer for me years ago. I set an EFI password on it around that time as well -- STUPID DECISION!! Unfortunately, I ended up shattering the trackpad and was unable to fix it, let alone use it at all essentially, for 8 months or so. I finally was able to replace it and access my computer again and came to the realization that I cannot - for the life of me - remember my Firmware password, rendering half of my Macbook useless.. How do I fix this? Is there any form of proof of purchase I can look for? My parents have tried looking for the original receipt for proof of purchase but aren't very concerned about finding it.. Ugh. I just want to be able to use Bootcamp again and play my games on there! 😝

Does the changing of the amount of RAM trick work at all? Or is my Macbook a lost cause? 😕

Thanks in advance..