It can be slow progress to lime. I remember Rosemary posted about a certain about of lime per acre will raise the ph by 0.5 I think. But putting on too much doesn't just raise it the ph higher, you have to work on it. We now lime in autumn and early spring, and keeping the grass well trimmed helps. We have had orphan lambs this year, and the buttercups haven't had a chance to flower, so I think that helps too, as it means no more seeds getting out there. It is horrible stuff- so invasive.
Beth