I discovered I’m an identical twin when I was about 23.
Truth be told I grew up with my twin brother but parents swore blind we weren’t identical, because the doctor told them so. Two placentas you see. But after 23 years of everyone except my parents being convinced we are identical we decided to take a DNA test. Considering that we look exactly the same, the result wasn’t a surprise.
Can’t help you on matters of raising twins. But can confirm being a twin is awesome.