Is it bad that he stopped calling me by nickname?

A guy I like at work used to called me a nickname every time he saw me. He’s shown signs of interest, and it progressed where we went on a date recently. We also have plans to go to dinner again (something he initiated) but at the moment haven’t planned a day.

One thing I have noticed is he hasn’t said my nickname since we started hanging out outside of work. He’ll say my name a lot more though. Same with less compliments like before. And even though we have plans and he’s been the one initiating these hangouts, is sorta feels like he’s not so persistent with the planning.. very go with the flow.

are these signs I should be aware of, or is this normal in the early stages of getting to know someone?

Is it bad that he stopped calling me by nickname?
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