@miajb For the bridging course you need to get 7 in all components. You can still study Nursing by getting a 1 yr conversion course or if you really want to do a bridging course you can retake the English test. There are many options now like PTE, OET and TOEFL-IBT, not just IELTS. đŸ™‚
I think its okay if its not continuous as long as you have the required experience (clinical practice) which is 450 hours within the last 5yrs.