Boster Car Seats

I'm not 100% sure on this, so any mama's that can help me, would be great! I'm just wondering when my oldest daughter will be able to be in a booster seat for in the car. Those kind that are just little seats, don't have the backing or that on it.
I asked my daughter's doctor when we were are her appointment yesterday, but my question didn't really get answered. Lexi is only 38 inches tall, only weights 31.5 lbs and will only be 3 at the end of June. Any suggestions?

Also, does anyone else have to deal with picky eaters!? Lexi is so hard to please when it comes to eating. For breakfast, she'll eat perfectly fine. When it comes to lunch and dinner, it's hard. And usually the stuff I make, she's eaten before, then all of a sudden she doesn't want it? And when it comes to fruits and veggies, now that's an issues. Dinner, I usually make some veggies. I always put in little on her plate for her, but she never eats/tries it for me. She'll just pick it up, lick it and right back on her plate. She's the same way with fruits too. Only fruit she actually seems to like to eat once in a while is bananas. And because of her picky eating, she hasn't gained much weight. Back in February, she weighed 29.8lbs? Then yesterday her weight was 31.5. Doctors have told me to keep doing what I'm doing. Which is keep offering it to her. And with fruits and veggies, to "hide" them in her food. I've done that, and she figures it out! Just trying to figure out what else I can do.

BrezzyPalmyra, Pennsylvania
    Every state is a little different on child seat laws. If the doctor didn't answer I know you can call the local police department and ask or the fire department should know as well. Or look up the state dmv website and it should have the information on it. The longer they are in a car seat the better...and the longer she can be rear facing the better.
      I'm not really a fan of the little set booster type car seats. They don't do much for making sure the seatbelt goes across the chest correctly. For bigger kids I prefer something like this:…

      As for the picky eating, just keep offering the foods you want her to like. It's very normal for kiddos to go through a picky stage. You can try to make the foods more fun though with being cut into different shapes or providing dips! Sometimes just getting them interested is enough for them to eat it.
      About Brezzy
      Current: Palmyra, Pennsylvania
      Birth: August 24
      On since: May 18, 2014
      I became a young mom at 19. My fiance' & I have 3 children that we love dearly. Him & I have been together for about 4yrs. I do not work, because I'm a stay at home mom. I enjoy every minute of it. What can I say? Life is good and I love my family.