Angela, essentially Chloe would just take an extremely long time to drink her bottle and would frequently vomit her entire feeding. From what I understand the food would basically just sit in her stomach instead of "emptying" like it was supposed to, hence the "delayed gastric emptying" diagnosis later on.
As far as the hypotonia, she never really would use her arms or try to raise her head during tummy time. Her legs, would get very rigid when we tried to stand her yet at the same time she was extremely "floppy".
She is now 20 months old. Her development is still very much behind that of a "normal" 20 month old but she is making progress thanks to a lot of hard work. We have her in physical and cognitive therapy and my wife works with her every day to help her achieve developmental milestones. Little things like holding her own bottle, bringing objects to her mouth, and crawling did not come easily or naturally. She essentially has to be taught everything but she is making progress. We're hopeful that she'll be walking soon.