The same thing happened to me and I considered hand expressing but was scared of increasing my supply. I’m sure this isn’t the advice you want but I didn’t express and within a day or two my baby was taking enough to relieve the pressure.
I used a haakaa to get some relief!
Same, I avoided pumping this time around as with my first I had terrible oversupply which lasted months from pumping in the very early days. Same as Tolu, I had 2 sore days and then last night baby emptied both through feeding. Olivia lactation consultant on insta has some good advice, she had a vid on a lymphatic drainage massage which I used and was helpful. She has loads of advice on what to do for lumps and early mastitis etc.
Id just use the haakaa to take the edge off from one boob whilst other is feeding. But it will go down.
You could hand express to make yourself more comfortable