You've come to the right place! You have done wonderfully
Our feelings about breastfeeding tend to wax and wane over time and admitting sometimes you'd rather be doign something else is fine. The good news for you now is that since she's older you can do something else if you really feel the need, like Jen has suggested. It's also fine to set boundaries if you need to - fiddling means no milk, or no more than x feeds in an afternoon, or whatever works for you. It's about finding a compromise that can meet both your needs. Again, this gets easier as they get older.

You're at a low right now and maybe it's time for some serious me time. Can you plan something nice for yourself to recharge? You've earned a break.