A few points (assuming we're talking mg/dL) doesn't really mean anything for LDL or TG. They'd naturally vary a few points from day to day (or probably even hour to hour).
Since HDL is generally on a narrower range and a far more important marker, a drop of 10 mg/dL there is relevant. Have you cut back on your saturated fat intake, perhaps? Many people buy into trying to minimize that and tank their cholesterol levels in the process. Here is an example of what is possible with a saturated fat-maximizing diet (e.g. butter/dairy and coconut oil as primary fat sources).
My HDL level had already been pretty good (I suspect partially due to eating lots of cheese), but switching to a low-carb/keto-style diet and the weight loss that came with it really improved things quite a bit with HDL increasing significantly and TG decreasing significantly over about an 18 month period. I'm skipping an in-between lab result (where everything looked better) since that was taken during a period of weight loss, and both results shown were from periods where my weight was relatively stable, making it a more appropriate comparison.
There's been too strong of a push towards getting LDL down rather than getting HDL up and a significant increase in HDL is far more valuable than a modest reduction in LDL when it comes to cardiovascular health.