Ahh, that can be tough, considering the fact you have to be aware of others around you. You can be big, little, or however you take care of yourself. It's you so it isn't going to be hard taking care of yourself. Just do the classics.
- feed
- drink
- bathe
- exercise
- change
and however far you plan on going. Of course when there are important stuff that needs to be done, it's kinda like flipping your little switch off and switching back to boring adult hood. There isn't much advice but just take care of yourself really. If you need to take care of yourself, then do it. You don't necessary need someone ELSE to take care of you. I'm pretty sure you know how to take care of yourself because we all have our AB fantasies and we are so regressed in but there is a time and a place to have fun at our homes but when there is work that needs to be done, we have to snap into action.
You can nibble on your pacifier and do the laundry, it's not rocket-science
While one side is a child and the other is an adult, you are one in all and you need to converge into the true person you are and step up for what you need to do, while you deem it necessary to find a mom and a dad to take care of you, you don't really need that (possibly a mommy as a wife when you get married in the long run) that is as far as you can go since you are 27, old enough to make your choices in life and run your life your own way.
You can't be afraid all your life, the world is cruel yes, but there are actually some good people in the world, you just need to look for them or if you feel like that special someone will abandon you, then kick that thought out of your head. You won't know unless you ask and that's a big thing we all face. Some of us will feel rejected but we don't know how the future will be if we don't signal some things or just plain ask and get it all out of the way. IF you stay afraid from everyone, you will not have one good life to run because you will grow your shyness even greater and it will get worse for you. Stay the gentlemen/Adult baby you are, and don't let anyone take that from you. Develop courage, and take care of yourself until you get married.