Uncontrollable eczema itching at night

My 3 month old has eczema and has had a bad flare up on his chin and neck area. This is healing but is obviously extremely itchy as it heals up and my baby can’t stop itching when he should be sleeping. We’ve bathed him tonight and applied a lot of emulsifying ointment but he just won’t stop itching his head from side to side, I’ve been trying to put him down and stop the itching for about 2hrs now - HELP!!