Is he self-absorbed, or has he just lost interest?

I've been with my boyfriend 3 months. Right after we started dating he had an accident and is still recovering from multiple broken bones. When he was in the hospital and i visited him a lot he always told me how much he liked me, and thanked me for being there, complimented my clothes and was really nice in general, and made me feel appreciated. However since being home for the past 2 months he's really not like that anymore. We spend a lot time together -we can't have sex because of his injuries--but he never kisses me or tells me nice things. it's almost as if we skipped the "honeymoon" phase of our relationship. He can't go buy me gifts or take me anywhere because he can't drive due to to his injuries, but he can do everything else. We seem to just talk about him and his condition, and he seems to just ask me how my day was out of politeness or habit. I can't tell if this is the way he is and he's not a mushy overly-affectionate guy, if he's just like this because of his injuries, or if he just doesn't like me enough to feel the urge to do nice things for me. His accident has been hard on me too, because I drive him around, cook for him and help him in every way,and being so supportive has been emotionally draining. He says thank you for the specific things i do for him as a caregiver, but I feel like he doesn't really acknowledge or appreciate me as a dedicated girlfriend. People keep telling me that it's because he's injured, but as he is getting better, this situation isn't changing.