How to ask if we’re okay in a relationship

Hello

I have been seeing this guy for about 5 months now and lately I feel like he’s being distant. He works away a lot and we speak to each other over the phone and that. But sometimes he doesn’t even answer or respond to my calls and messages and when he does he’s just normal with me he’s not short with me or anything.

But when he’s been coming home he’s been spending all his time with his mates and av not really seen him or spoke to him probably in over 3 weeks.

I know he’s had a lot on with working from home and other personal issues but I just feel like he’s being distant with me

How do I ask if we’re okay ? And how I can bring it up