Sleep after sickness

DD has never been a great sleeper but when she is sick, understandably her sleep gets even worse. However, the issue is that once she is well again it takes 3-4 weeks to get back to a reasonable pattern (not waking in the middle on the night and crying for a couple of hours).

Also just as a side point DD won't settle me during the day at all will just scream but as soon as DH goes to her she sleeps. It is ok at the moment coz DH has a week off work but I just don't know what is going to happen Monday. I'm hoping it is just a thing coz she is sick but I don't think it is I think she is going to be really bad come Monday.

I think has turned more into a vent but anyway...