Am I (26/F) to break up a loving relationship with my (28/M) bf?

We have been in a loving, respectful, and intellectually stimulating relationship for about a year (also living together). We are both in school, and things at school has been taking a toll on his mental health. There are days he is withdrawn and overthinks about his future. Sometimes he feels like leaving everyone including me, his family, his work to be on his own, figure out his life. I, unfortunately, don't think of myself as a strong partner, who is able to support him through his. I keep getting triggered by him leaving, and being in an awful headspace myself. He keeps mentioning that if things at work do not work out, he would move back to his home country which will put us with a 12 hour time lag. I am terribly scared, and of course he is extremely stressed about the whole thing, because for him it means flipping his whole life around.

Am I to let him go, give him space to figure out things, and basically break up with him? Any advice in this situation is appreciated.