I made an IPL. already in the primary and it is towards the end of fermentation. I have added 1 oz of hops which I will keep on for 1 week, do a Diacetyl rest then transfer into a secondary. I want to add more hops in the secondary. I understand that the beer should be on a dosage of hops no longer than ~ 2 weeks but I want to lager for 4 weeks. would it be best to just transfer after two weeks in the secondary to a tertiary or just put the hops in on the last two weeks?
And what is the best way to prevent oxygen introduction? I usually put my hops in a bag weighted with SS nuts and then transfer the beer on it. but if I wait until the last two weeks of Lagering I will have to 'drop' the bag in.