Sometimes its as well to feed smaller meals but more often.
My pups are still fed 4 times a day ,and they're 15 weeks old.I'll do this until they're 6 months old, then drop them down to 3 meals a day
Its easier for them to digest, and they aren't overloaded this way.
Also mine have raw chicken wings every day
Add some pics ,they might not be as thin as you're thinking
can I ask why u prefer too feed 4 times a day till there 6 month mate