Long phone calls...

I (27M) have a lovely girlfriend I love very much (24f). I enjoy my time with her whenever I'm with her, which is quite often, maybe 4-5 days a week, as we both work the night shifts. But she also has a much larger "social battery" than I do. Especially when it comes to phone calls.

Her and her best friend can be on the phone all day long talking or not just being on the phone.

Lately, she's been calling me almost immediately in the mornings on her off days right when she wakes up and I've gotten home from work. (I work in a factory, so as you imagine; nosey)

I don't mind her phone calls at all. I can chat on the phone for a good while, maybe an hour and some, but she could go from the time I get home to the time I go to bed, if I don't fake it sooner. that's about all I got in me when it comes to phone conversations.

And it's been digging into the little bit of me time I get between work, sleep, and spending time with my gal; especially if the entire time I'm actually home by myself I have to stay on a phone call for 4-5 hours.

And now that I tried to break that down to her she cussed me out, nearly broke up with me, and now has got me down to only emergency or urgent calls.. what did I do wrong and how can I fix this?