Should I?

We met in Lockdown 2.0 and I fell so fast, we spoke every day for 8 hours on FaceTime and then we finally met. We both couldn’t stop saying how nice it was to be in eachothers arms. He then took ill after our first date and had to move home for medical treatment. Because he was so poorly he wasn’t he said he couldn’t return for 3 months (he was put on a heart programme) and that he needed to be selfish and stop talking to me because he needed to prioritise himself. So we stopped talking so I didn’t over step my mark especially as he genuinely was so ill. I think about him everyday and want to message him all the time. I have thought about messaging him in Christmas Day to check on him and his progress but would that be selfish? All I want is him to myself.