I need help!! I’m a walking zombie

My 6 month old won’t sleep AT all he went from 12 hours 2-4 months old to 1-2 wake ups to 2-4 wake ups to now every 30-60 mins waking up screaming like I’ve never seen before. He used to literally never cry unless he was hungry and then he got sick and all hell broke loose.

He was never on any schedule but this is what I’ve been trying bc it’s very close to his self created schedule

8:00 AM – Wake + milk feed 10:30–11:30 AM – Nap 1 11:30 AM – Wake + milk feed 1:00 PM – Solid food 2:00–3:30 PM – Nap 2 3:30 PM – Wake + milk feed 5:00–5:30 PM – Nap 3 (short catnap to get to bedtime IF needed) 5:30 PM – Wake + milk feed 6:30 PM – Solid food 7:15 PM – Bath + bedtime routine 7:45 PM – Final milk feed 7:45–8:00PM – Bedtime