How to teach self feeding?

My daughter is 13 months old and still doesn’t self feed. She does however grab and drink out of her straw cup by herself, and tries to “grab” my breast and bring it to her mouth.

We started solids at six months, had a set back at 7 months where she didn’t want anything besides breast milk for a couple months. After that, she ate like a bird - very little solids.

Well in the past week or so, she’s finally started eating, like a lot! It’s exciting because this is a great transition for her.

But the issue is that she won’t feed herself. We’ve tried to put the food in front of her but she just whines or tries to bring her mouth to the table. We tried putting her hands in food but she doesn’t have an interest in bringing her food covered hands to her mouth.

I feel like she is very behind. Any advice?