Confused

Hiya ladies, I will try and keep yhis short and sweet. So me and my partner have been together almost 5 years and for the last 2 and half years our sex life died!! One due to our baby and the other is at the time wasnt feeling so great untill recently where he has been diagnosed with Crohn's disease and a scar tissue lump (caused by having his spleen removed as it was going to explode) which appears (when having a bad episode) next to the base of his penis. Since we have no physical contact in the bedroom, he has been come very reserved with kisses, hugs to the point where its just a peck on the cheek and a random hug when I'm upset. We have spoken about it and he is stressed with all the treatment and the pandemic as he is sheilding and not allowed to work (bus driver and classed as critical.) We have spoken about having another little one when he is feeling alot better. What I'm confused about is how to get him to be less reserved with kisses and hugs, so we can start slowly building up to the bedroom action. If anyone could offer advice that would be great! Thank you for reading!!