Sleeping all day

My babe is 5.5 months. She’s had a bit of a cold and been feverish since last evening.

She had disturbed sleep last night because she woke up when we checked her temp and changed diaper etc. She eventually went to sleep at around 1.

It’s nearly 1PM now and she’s still asleep. She wakes up to feed and I nurse her. She goes back to sleep. I don’t want to disturb her if she needs to sleep...but I’m worried about tonight. Will this ruin her night routine?