just keep at it...no need to rush anything...
the longer it takes, the more stable your tank will become..
this is not an instant reward hobby, and the more patience you have, the happier you will be in the long run!
I cycled with LR, and my ammonia anly went up to 1 ppm, then nitrates went up to around 15-20 ... I never saw a nitrite spike...
once you get some nitrate showing up, that means your bio base is establishing itself..
Just make sure to keep testing for all 3.. amm, nitrite, and nitrate, and once your ammonia is 0, and you have nitrate, wait a week, and watch for any nitrite spike...
if you dont get one, and amm is 0, and trates are present..add some clean up crew, then wait some more....