Thoughts on red shirting a summer birthday child?

I did a search in this group and came up with a post from a few months ago but there wasn't much on summer birthday kids.My son was born in July and was diagnosed with a grown disorder when he was 18 months old. He gets nightly injections of growth hormones because the low muscle tone associated with his disorder can cause other health issues, such as a high susceptibility of developing diabetes. He has gone from the 10th percentile in height and weight to about 40th percentile since starting the injections.Academically, he is advanced. He was evaluated by our state and received physical therapy. At the end of the program, they tested him in all areas and his scores were that of a child a year, sometimes two years older in the academic related tests. He continues to have a love of math, logic and learning in general. However, his emotional intelligence is behind. He's a bit immature and has always had a rough time in preschool the first half of the year, even when he was 2 and only going 2 1/2 hours a day for 2 days a week. This year was a little rougher for him when he started full time pre-k.His father and I have leaned towards holding him back since he started preschool based on his maturity level and his size (though not because of sports, we just want him to be a similar size of his peers). He will turn 5 this July and so we are growing closer to having to make a decision. Financially, preschool has been tough since his father and I are no longer together and both have individual households to pay for. But is something we'd make work if it was beneficial. Our public kindergarten is also only 1/2 day so there would still be an aftercare expense.Right now I'm leaning towards putting him in his preschool's kindergarten program. Their kindergarten is full time which would give us another year to see where his maturity and growth is at and then we'd make the decision to put him into first grade or public kindergarten. I'm curious what your thoughts and experiences have been! via /r/Parenting http://ift.tt/2iUT7xH