my skin is so confused right now

Right so we've had like three warm days in a row and my skin has completely lost the plot. It was finally settling into a proper routine after winter and now it's gone all congested and a bit shiny in places which... wasn't happening two weeks ago. I genuinely don't know if it's the temperature change or the fact I was layering a thicker moisturiser for months and haven't actually adjusted anything yet. Honestly I think that's the bit nobody really talks about — it's not just winter to summer that messes with your skin, it's the in between bit. The fluctuating days where it's cold in the morning and then weirdly warm by 2pm. My skin doesn't know what it's doing and tbh neither do I. The one thing I have kept consistent is collagen, partly because at this point it's just habit and partly because I do think it helps my skin hold onto some baseline level of... okayness? Hard to explain. I just notice more when I skip it. Anyway I'm gonna try swapping to a lighter moisturiser this week and see if that helps. Small change first, not going to overhaul everything at once like I usually do lol.