Hi again Jackie,
The advice from the world health organisation is not to wean until 6 months. When I was born the advice was 3 months (12 weeks).
I think the current advice is based on the fact that nutritionally speaking babies do not need anything other than milk until they are 6 months and also their digestive system is not fully developed until then. However, as all the mums on this thread have found, 6 months is a long time when you've got an increasingly hungry baby!
Baby rice is a very, very simple food and has one ingredient - rice. The farleys rusks will have more ingredients than this, so if she's happy with the rusks she'll be fine with the rice.
The rice is like a powder and you just mix it in with her milk and make it as thick or runny as you like. It doesn't really taste of anything, so it's a good first food and then you can add a bit of fruit or veg puree to gradually introduce her to more tastes.
Because she's so little I'd try and stick with the rusk or rice for another week and then maybe add in a bit of fruit. Give the same food for 2 or 3 days to check for allergies, before introducing a new one.
There's another post futher up this thread where I've suggested other recipes and recommended some jars too.
Let me know if you've got any more questions :-)
Oh, one other thing, I wouldn't decrease her milk yet - only give her as much solids as she wants on top of her usual milk intake.
Sarah x