is he not that into me or busy?

a guy I have been seeing/gone on a few dates with found out that I have a serious medical condition. he texts me all of a sudden once a day when I never would hear from him in likw a week. from our recent daily texts, he would ask if I am okay but doesn't engage in further conversation. it's kind of confusing because he would either use a GIF to respond or just leave me on read -- then ask me if I am okay again the next day.