Relationship help!

Hi, started a relationship with my boyfriend 2 months ago and everything was amazing, but he's started giving less compliments and doesn't text as much which makes me really anxious, I havnt heard from him in 2 days, I sent him a text today just saying I hope he's having a good day and that I've been working on myself and I'm in a happier place and much more positive, should I be worried that he's losing interest? Or does this happen to others once the initial excitement wears off?