Baby eats more at night

Help! My LO has just turned 5 months and recently hasn’t really been interested in her milk. She will probably drink 3-4 oz every 4 hours if that.

Which has now meaning she is waking more often in the night to catch up on her calories. Im super exhausted..😣

How do i make the switch to more feeds during the day so she sleeps in longer stretches at night?