Nursing strike??

So my lo will be 8 months this week and the last week and a half has shown very little intrest in nursing during the day; only at night. We cut out solids at lunch to see if that would help and i usually have to nurse her in a quiet spot because she does get distracted. Her first tooth is comming through so idk if that has something to do with it too. When she is with her nanny she drinks about 10 oz from the bottle for an 8/10 hr day. And now my once decent sleeper is waking up 3 times a night to nurse. Just wondering if any other moms are going through this or have experience. How long does it last?