We (25M and 25F) are turning asexual. Please help!! We need advice?

This started 5 months ago. She went through a mental exhaustion. I was there for her at every turn of her life. She went through a lot. But so did I. I’m not making it about myself but I was always there for her. Now, it’s been five month since this. She has recovered. The thing is we didn’t had sex in these past months because of exhaustion and trauma that hit her. I’m absolutely fine with that tbh.
But she told me that she is back to her old self now. I tried to make out with her. But it was no good. She pushed my away after a few seconds. This kept on for a while. I had to ask her if there is something wrong going between us. Her reply was that she wanted to do it but could not carry on with it. That was confusing. I still didn’t mind.
In the beginning of our relation, we were like these sex gods. Expressive of our needs, having sex atleast 3 times a week. I still feel the same for her, but I think her spark has gone.
I love the girl from my heart. But i think sexual contact has its own importance.
We recently had sex after 4 months. It was great. Awesome indeed. She asked me that she wants to have our sex frequency go up once again. I was happy that she’s coming back finally. But it’s been a month and she is back to square one.
We both want to stay together. She told me so. I know that too. But I’m scared that this asexuality shall take its toll and it could end.
Please advise how should I take this forward as I feel helpless. My life is not dependent on sex but it’s something we need but aren’t able to achieve again.
Thank you in advance.