Delayed kiddo going into daycare without normal skills.. worried?

Our little girl is 16 month old.. she’s about to start daycare full time and I am terrified! She crawls well, but unlike all 12 kids in her class - she’ll be the only one that doesn’t walk yet.. doctor says it’s normal but I’m just so sad and worried for her.. also.. she won’t eat or drink by herself.. she won’t hold a bottle, or sippy cup.. she’ll eat a couple bites of her food and throw it all on the floor despite how many no’s we give her... she also wants to be held all the time.. is constantly grabbing on to our legs, throwing tantrums.. and to top it off.. she won’t lay down for a nap despite months of trying and leaving her in her crib for 2 hours starting at 12:30pm on the dot everyday.. I’m at such a loss! And don’t know how her teachers are doing to react.. she’s defiant and just not where she needs to be physically or emotionally.. anyone else have this happen? Did it eventually work itself out?