latching issue

Angeli • 32 year old first time mom, married, therapist/social worker
My baby has seemed to forget how to latch properly at 5 weeks/!!  She had been doing well and all of the sudden Jennie latching shallowly.  She won't open her mouth wide enough and it's painful for me.  I can tell she probably isn't getting milk effectively.  We have been giving her a bottle his whole time as well (also pumping).  It's nothing new so I'm not sure why she has stopped.  I pop her off and try again but it isn't working.  It's frustrating for both of us.  Suggestions?  I don't want to stop with the bottle bc I have to go back to work soon.