new detergent, night 1

Night 3 in a row waking up around 2am scratching before I’m even fully awake. Swapped my laundry detergent to a fragrance free one last night, so that’s only 1 wash down, way too early to say anything for real. Went back to my older cotton pillowcase instead of the flannel one too, touched the flannel for 2 seconds and nope! Dropped the thermostat 2 degrees before bed, room felt noticeably cooler by midnight. Still itchy around 2am but maybe a little less than the night before? Hard to judge anything half asleep though. Moisturized right after my shower like always, didn’t change that part. Skipped coffee after 3pm since I read it might help with lighter sleep, no clue if that’s connected for me but it’s easy enough to try. Opened my budget spreadsheet again tonight too, first time in weeks, mostly just stared at it so far… Anyone know how many nights it usually takes before a detergent switch shows any difference? Trying not to get my hopes up but kind of hoping it’s fast.