Too late for 3A*

I’m writing this on march 12th. In February mocks I got BCC ( maths, bio and chem ). I haven’t been that focused in school since my grandma died and in the weeks leading up to the mocks I didn’t do any work at all. When I revise I feel I can pick up concepts quite quickly though . My first exam is on the fifth of June . If I revise from now, every single day doing as many past papers as possible, is it possible to get 3 A*?