What about waiting time here in UK before I can apple for ILR as spouse of UK citizen with EEA family permit?

I am have been married to a British Passport holder for almost 4 years, however I am staying in the UK(London) on a EEA family member resident permit, as we have moved to the UK from Ireland. I would like to know, firstly, whether I could change my immigration category to a spouse of a UK natinal ...