swapping over - advice needed

Helloooo! I'm currently ebf my daughter, she is 5 months & throughout the day her feeding is becoming exhausting. Some days she can go 3 hours but other days it's literally every half an hour & that's outside of a growth spurt!! I'm considering maybe in the next 6 weeks bottle feeding her in the day & breast at night or whenever is convenient. I have no idea on where to start with a pumping schedule so any ideas would be great. I have a good supply & a pretty good pump output when I pump. I just have a greedy baby. Thanks in advance