IM FREAKING OUT (Paranoid)

So me and a guy we have been talking really heavy and like each other a lot. And I know since he's older he has other responsibilities you know. Like he has a son and he had his son the previous weekend. So I knew he wasn't gonna be heavy in texting as much. 
Now out the blue he just never replied to my last text message. I just figured oh well till the next morning but he hasn't texted me back since Sunday at 1 O clock. This was our lass messages to each other 
And these are our type of messages 
Now ever since his phone dropped in water like a week ago sometimes it WOUNT like work for a couple of hours. And he'll text me eventually saying sorry babe like phone was acting up and how he needs a new phone. 
And i test facetimed him  like tons of times but a sign that it kinda has problems is that the facetime will just cut off and not even ring 
And tried calling and it would just eventually go to voicemail 
Idk we have plans this Christmas and in planning on sleeping over and im just scared he wount ever text me again. Because I've had people walk out on me when things r goin fine so explains the paranoia 
I just feel he would have had a way to contact me 
My plan is that if he doesn't text me back confirming our hang out 
And Christmas passes I'll basically start the "recover get over you process" 
Ugh I love him. 
Im just scared he's leaving me. And he's told me billions of times he would never just walk out 
Idk anybody give me advice