What is going on with my toddler!?

I’m so worried about my three year old daughter.

She has always been the most outgoing, bold, bubbly little girl. She would go up to anyone and everyone to talk, say hi, or try to play. Quite literally would try to hug strangers on a daily basis. Dance and sing in public spaces. Run up and hug all of my family members and talk their ear off. Etc.

For the last 4 months or so, her temperament and personality has completely changed. We are super close with my side of the family and see them almost daily, and suddenly she wants nothing to do with them and hides behind me or angry screams at them. She’s been going to dance class for over a year and now all of a sudden she hides behind me and says she feels shy or scared to go play or talk with her dance class friends. Anytime we go out anywhere she cries and asks me to go home. It’s literally like a flip switched and my daughter is a new person.

I’ve been thinking about it constantly and can not pin point any big change or event that would have happened to cause this social anxiety. Nothing traumatic that I can think of. I’m at a loss.

Is this a normal phase for a three year old? Should I go to a child psychiatrist or behavioral therapist? My husband insists that this is normal, but I’m worried. Keep in mind my husband works 50+ hours a week so he doesn’t see most of it personally. I’m mostly worried because it is such a big switch from the way she interacted with others from before.

I will say that I’ve considered the possibility of autism, but she doesn’t line up with all of the traditional symptoms. She makes eye contact, and is extremely ahead of her age verbally.

My concerns include :

Lining up toys or items

Tippy toe walking

Does not like to be dirty or touch things that are sticky or dirty

Fixates on certain subjects, toys, or shows

Picky eater

Idk, I’m at a loss and wondering if her sudden behavior is a normal phase that you have experienced with your toddlers, or if I should be concerned and seek professional help

*also she doesn’t go to daycare