You know sianie, I am worried that my DS2 will not be nearly as interested in solids as DS1 was! And we haven't even really started! It's hard when all you have to compare is your first child. But I'm going to say what I will probably be telling myself in a few months.
Don't worry, I don't think there's any reason to at this point. It's not like he is refusing everything, it does sound like there are things he likes. Keep offering what he likes, and keep offering new things. Chances are what he likes now he won't later, and what he doesn't like now may be his favourite in a month.
As long as he's still getting all his milk, and he's happy and healthy, it's not a big deal if he doesn't eat with a lot of gusto.