Eleven months old. Waking up at night for almost a week and playing, …

Eleven months old. Waking up at night for almost a week and playing, eyes red, but I can't put him down. He sleeps two daytime naps, I put him down as soon as he shows signs of wanting to sleep. Sleeps 2-3 hours during the day in general. But it's something with something, falls asleep around 7-8 pm at night. Maybe someone could tell me what it is? He never did this before, didn't play at night.