She's 4 months old? Starting to learn more about her environment, starting perhaps to move around more? If like my son, starting to teethe? Sounds normal to me, the sudden difficulties.
I don't see how putting her in a room alone would help at all. Then you'd REALLY be up all night with her, and your husband too!
2.5 hours to get her to sleep? Are you putting her to sleep too early?
Does your hubby help with nighttime at all? We have a shared routine which started when DS was very new, where hubby would walk with him and calm him down, then he'd hand him off to me for milk, and back and forth as needed. That way it was split up and neither of us could get too resentful.
I don't see how putting her in a room alone would help at all. Then you'd REALLY be up all night with her, and your husband too!
2.5 hours to get her to sleep? Are you putting her to sleep too early?
Does your hubby help with nighttime at all? We have a shared routine which started when DS was very new, where hubby would walk with him and calm him down, then he'd hand him off to me for milk, and back and forth as needed. That way it was split up and neither of us could get too resentful.