Trouble sleeper

My daughter went from sleeping 12 hours straight at night to waking up every 2 hours at night. She's been sleeping thru the night since 6 weeks old but within the last day or so things have changed. When she wakes and cries, you pop the bink in her mouth and she falls back to sleep. She's not even awake, she's sleeping whining. Is this her sleep regression? She's going to be 19 weeks..

Current situation: try to nap but would rather pet her toy or pull her bink out lol