I know how difficult this sort of thing is - I feel that as women we are conditioned to see our needs as problematic/some kind of imposition. Until we see them as a weakness on our part, and try to hide them/squash them down, so that we take up as little space as possible.....
In fact, your desire for some regular communication from this guy you are in a long-standing, intimate romantic relationship with is not an imposition or a weakness of any kind - it's absolutely understandable and normal!
That doesn't mean he is doing anything wrong - he may have no idea how you feel about this - but it's absolutely fine to tell him. (I agree, not in a critical way, as there is no evidence he is deliberately being dismissive or ignoring you).
BUT, if you tell him, in a nice way, that you would enjoy slightly more contact, and he reacts badly to that or ignores it, then that will tell you something about how he feels about you..... But actually, maybe that's something you need to know?
And there is every chance, if he is otherwise great, that he will also respond well to this?
Most of all, try not to think of yourself as "needy". It's got negative connotations - and actually, if course you have needs! Needs are a totally normal, healthy part of the human condition......