I am a diaper lover myself and love to act and dress like a toddler and baby sometimes when at home.
I'm an adult now but have loved diapers since I was around 5 years old.
You're certainly not alone in wanting to play as a baby or toddler and want to wear diapers.
There are thousands of kids, teens and adults out there that have a love for wearing diapers as they feel very good.
When I was a toddler I wore the old plastic backed Pampers diapers and now I wear Abu Super Dry Kids diapers which are a replica of the plastic backed pampers diapers that I wore as a baby and toddler.
Wearing those diapers makes me feel like a baby and toddler again.
I also go to the beach in the summer and wear my diapers without any pants and play in the sand and it's very fun.
As for getting your parents to treat you like a baby I personally just would not tell your parents about your love for diapers because it could turn badly for you.
It's best to just keep your parents out of your diaper fetish and the less they know the better.
It's nice in fantasy to want to have your parents force you in diapers and treat you as a baby but most parents will not force you to wear diapers or treat you as a baby.
Just buy diapers yourself or maybe fake wetting the bed and ask your parents to buy diapers for you for bed wetting.
They might do it and then again they might not.
I would just buy the diapers yourself if you can and when you move out you can be a baby or toddler and wear diapers as often as you want.
I now wear diapers all the time for both pee and poop and have not used the toilet in 7 years now and plan to use diapers as long as I live.