My baby (11 months) is disrupting my older sons sleep quite severely.
They have separate bedrooms, go to bed at roughly the same time, a d that's fine. But the baby keeps waking up my son in the middle of the night .... He's nearly four and he's exhausted. And we just can sleep train the baby as it just wakes him up within ten mins.
Can I give him ear plugs? Any other suggestios ?