It sounds like you are doing a perfect job . Don't let the MCHN stress you out, do things at a pace that you and your DS are comfortable with. I really only started DS2 on finger food at around 8 months too, now at 9 months of age he is really good at eating it.

At 8 months DS2 could sit up unaided, but he only started commando crawling last week! My first DS was commando crawling at 6 months and hands-and-knees crawling at 8 months, they are all so different. DS2 is much less motivated than DS1 ever was, I kind of enjoy having a more laid back child LOL.

HTH