Am I giving him mixed signals or is he? Can't believe I'm this confused

So, I’ve been seeing this guy for a little over a month.

At first, he was very attentive and sweet. Texting me funny messages if I was having a rough day and reminding me that he thought I was beautiful.. yada, yada, yada.

Then he went out of town for business for about a week and a half and he was MIA for days at a time.

I figured he was busy and it was no big deal.

He popped back on the radar the day before he got home and we made plans to meet up the night that he was back.

We had a great time and actually opened up to each other more than we ever had before.

Before you ask, I did stay over. We have had sex (although we waited for two weeks/4 dates before going that far), and I realize that sex does not equate a relationship.

I had to leave early the next morning for work and woke up late so I bolted out of there with barley enough time to say goodbye. Text him from work to thank him for a fun time, he replied in kind and I went on with my day.

It wasn’t until 4 days of silence that I had had enough. I decided to break every rule and text him first.

We have a lot of running inside jokes so I sent him a picture related to one and he replied in under a minute.

I sent him one more text about it when he asked me when he could see me again and let me know that he was free all weekend.

I gave him one of two options and got distracted with work again.

Since then, nothing.

So here’s my question:

Is he playing games with me? Is he confused too? Am I (more than likely) over thinking this and should just text him to firm up plans?

I’m confused because he went from being highly attentive to barely involved. I feel like I’m getting signals that he has lost interest and then he does something to change my mind.

My gut says to not get attached but more than one person has told me that I need to learn to trust other people more and not assume the worst of others. Which makes me believe that I am being cold to him and am just not seeing it.

Feeling a bit like I’m a ship without a rudder on this one. All advice is welcome