Yep, sounds totally normal! Don't panic, the sore boobs are normal as well - your supply will adjust to the new routine Isla is determining and things will settle down soon
Now, go have a long shower! Paint your toenails! Schedule your day so that you can go do a bit of clothes shopping without being interrupted constantly for feeds! Or... you know, just do the mummy thing and hang out in your jammies all day and catch those z's whenever you need to You're doing a fab job - see, we told you it wouldn't be like that forever and that you'd make it through! <3