How about the approach of telling your T there's something important you'd like to discuss with him, but you're having a hard time getting it out? Then the two of you could talk about why this is hard for you, and he might be able to help you talk about the issue.

Are there times you have felt more cared for in therapy but now you don't? That might be a way into the topic with him too. You could tell him it seems his behavior to you has changed and you want to check your observations with him, to see if they coincide with his own.

Either of these ways "in" to the topic avoids directly having to say, "T, I want you to care about me more," but they can still be difficult if, as you say, you have an "extremely difficult" time talking to him. If you just can't talk, then I think, as the others have suggested, a good approach is to write it out.

Good luck. Therapy is hard.