Tired in the middle of the day (or all day 🙃)

Pen • 8/17 🌈👧🏼 | 11/19 🌈👦🏼| 👨‍👩‍👧‍👦

My daughter now naps only rarely, but she's still very tired mid-way through the day, and then we just spend hours until bedtime with her acting like a jerk. Any tips for this? We will often put her in the bedroom to nap and she doesn't sleep and it doesn't seem to help much energy-wise. Bedtime is 7pm-7am (but we don't wake her up - sometimes she'll sleep until 8/8:30)