The rhythm hand deserves some extra love! Stop telling yourself that someone will take care of the heavy lifting with guitar. Stop being the weak link in the band. Learn to play the damn guitar! It's nothing complicated, so don't feel overwhelmed. You just need to dedicate a little additional focus on specific techniques.
Here's the thing, I have way too much going on to sit a practice all day. I know, that's lame. I wish it was not that way. But I have a severe case of ADHD that has never been diagnosed and enough ambition to make ole Teddy Rosevelt say, "Maybe slow down a little, bud."