Tongue tie n breast feeding.

Annelise • Mom of 5
I just had my son on Monday. The doctor told me he was tongue tied n that it can cause issues with him licking n latching. In the hospital we got lots of help but he only ate a few times during the entire day. Now that we are home I feel he isn't eating enough and he gets quite frustrated when he latches an then spits it out. He doesn't seem hungry a lot but will always suck on his fingers. I'm just stressed an worried about him eating is there any advice to help him latch better? Or anyone going threw this as well??