What should I do? should I continue on to the next book?

Hello! Around 2 years ago, i read through around half of the 1st mistborn book, but things happened which meant that I couldnt finish the novel. it has been 2 years, as stated earlier, since i read the book. I remember most of what i have read, and feel as though starting from scratch would feel redundant (and be kinda boring, as i have already read through most of it,) and i have the next 2 books in the series, as i got the trilogy pack. Thank you!