Fiance didn't text me for 6 hours after he got off work. He knows it upsets me when he goes silent but does it repeatedly. Is this a red flag?

I texted him at 6 pm updating him on what I was doing. He responded at 11 pm saying he passed out. At 12 am he texted again saying good night. I didn't respond and at 1230 he said "Oh yea I also love you." He didn't apologize. I told him it hurts when he goes for hours without texting after he gets off work and that he doesn't update me. Yet he does this a lot. We see each other twice a week and on weekdays he goes silent and doesn't text me after he gets off work. He usually just texts me "good night." Should I be concerned?
Fiance didn't text me for 6 hours after he got off work. He knows it upsets me when he goes silent but does it repeatedly. Is this a red flag?
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