lip tie advice

Lindsey

I'm pretty sure my 3 week old daughter has a lip tie. She can't flange her upper lip at all and even has trouble bottle feeding. We try breastfeeding but she can't stay latched and just falls asleep. Who can diagnose this and any advice? Is it too late at 3 weeks old to do anything? We are in Southern California (inland empire) so if y'all have any recommendations I'd greatly appreciate it!