Same, I apparently have tiny, tiny veins, as do my entire paternal family and I’ve been advised by various medical people to drink loads of water and be really well hydrated and warm before getting blood taken, which really does work. For FBG, the diabetic nurse also recommended drinking lots of water, running your fingers under a warm tap and also shaking your hands down below waist height before you test - I don’t think any of this effects your blood sugar reading, but it makes it a lot easier to get that drop of blood out for the meter!