...So, here's what I want to know: Is it a good idea if I use the money I've saved up from 3 years of my trust fund to buy Bitcoin?
It is very difficult to give advice that is related to finances and can lead to a complete loss. You should understand that investing in bitcoin does not mean guaranteed profit. For example, after 3 years, its price may be lower than the current one. But you should not focus exclusively on this option, everything can be the opposite and the cost of bitcoin will increase several times. But you have to make the final decision yourself, as your financial future may depend on it.
I cannot decide also on other person’s finances because I don’t want to take the blame whatever the result in the future. But here’s a piece of advice, study first whatever investment you desire to invest, and when you’re knowledgeable enough, decide on yourself whether it’s good or bad to invest your hard-earned trust fund. That way, you will be responsible whatever the result of your own action and decision.