Anyone used melatonin for your 2019 baby?

Pen • 8/17 🌈👧🏼 | 11/19 🌈👦🏼| 👨‍👩‍👧‍👦

I laid down with my son for his nap today, and we accidentally slept until 6:45!! (He'd normally wake up no later than 4:30) I've given my oldest children's melatonin here and there, (which is recommended on the package for age 3+). I'm assuming we'll push bedtime back a bit tonight (usually 8:30-9, will probably keep him up til 10), but I'm still concerned he'll have trouble falling asleep. Can I give him a little melatonin?