Just pump if very sore, I have to do it once through the night.
It will ease - mine were awful until just recently and baby is just over 10 weeks. The feeding specialist at my weighing hub said that after 8ish weeks your boobs settle down with the right supply Enjoy the sleep!
Did they just start naturally sleeping longer? Any tips? Lol sorry not sure on the breasts. I don't think it'll take long if I remember correctly from with my 1st