Absolutely, 3 months ago was different period in lactation, and environment had different food and temps.
Think of it like this. In winter, everything is slower and heavier. In summer, there's more energy, more activity, more growth. So in winter, the milk has more fat, it will be like an ox... solid, strong, and stoic. And honestly, a little austere. Not quite so much flavor. The curd, as a result, is going to be reluctant to let go of whey, be more ponderous, and really try to provide the most calories to everyone to make it through to spring.
In summer, everything is more playful. The milk is thinner, lighter, has fewer calories but is packed with nutrition from the grass, and has more minerals/vitamins because the grasses take up those minerals from the soil and the sun. It's eager to make curd for you, eager to let go of whey, and has a sort of ADHD where you have to be more gentle with it and coax it, because it has a somewhat mercurial temperament and needs a more delicate hand. Otherwise, it will run around and play the jester, making one a fool.
I think the milks invite us to have different kinds of relationships with it and with the curd. Winter milk and curd wants us to be predictable and hunker down with it for the long haul, and be firm and clear with our demands so we make it to summer. And summer milk wants us to put on a t shirt (and hair net), turn up the music, and dance. It wants a bit of flirting and romance because it's dead sexy.
Dancing is very active. So the cheese will be thinner