You get him relaxed and euphoric love on him sweetly and itll prolly work out when the stress is gone.
Not been in that situation but would hope he remembered he still had fingers and a mouth. Penetration is not all sex is about. But yeah he may not feel the same, understand big deal for men. So check up make sure all is well there. There is the little blue pill. Or we could start to explore ways of being close without penetration being the most important thing, sexual massage, etc.