1 to 2 hours wake ups in the evening?! What's that about!

I am exhausted!! All week my little one has been waking up for an hour to now 2 hours every night for the last 2 weeks! Her dad is refusing to do any nightfeeds as we call them because he's done them 3 weeks ago when he was off. But she didn't have night feeds then! She was perfect!!! Sleeping from 7 am till 6 am ishh! Now I am baffled why is she waking up in the middle of the night refusingto sleep and even refusing a bottle! What happened?! It can't be a regression? We went through the 12 months -13 months regression hard!