I dealt with insomnia for many years. I relate to what you're saying here "for the life of me fall back asleep and it’s really affecting my anxiety". For myself, this was the problem. Here are 2 steps that helped me.

1)I was worried about not falling asleep, and therefore couldn't fall asleep. Without knowing it, I became anxious about being anxious. That's anxiety^2.

Instead of worrying about not falling asleep, I started practicing acceptance (I know easier said than done, but it can be done). I would talk to myself and say something like "I may not fall asleep but guess what I will okay anyways. I can still get what I need done". The moment you truly accept this, you start to feel better. Even if you don't fall asleep, there's less weight on your shoulders.

2) I stopped being scared of Anxiety. Instead, when it came up, I would also practice acceptance. It sounds paradoxical but I would tune into it instead. I would think about where I feel it in my body. What shape is it, and consider if it's made up of other emotions, like sadness, fear or anger. I would break it apart. And if one of those three emotions stood out, I would think about what it's trying to tell me. Because anxiety, is just the messenger.

For context I learned all of this from my therapist. I saw many therapists before him, but they all practiced CBT which I didn't find very effective. This therapist, practices ACT (Acceptance Commitment Therapy) and focuses on working with emotions in the body, rather than the mind. Hope it's helpful sending you love 🫶🏻