Is my baby starting to prefer bottles?

I went back to work about 2 months ago, and obviously baby has bottles while I am gone. Over the past week, he has been latching and un latching a million times when I nurse him in the evening/night (when he usually gets bottles). I am gone 2pm-1130pm. He let's go and then cries. I latch him on again, he takes a sip or two and the process repeats over and over again. He is almost 5 months old. Is this a sign of him preferring the bottle?

We use Dr. Browns bottles, and Phillips Avent bottles and sometimes Smilo bottles. Do I need to try different bottles that are closer to breast? Pace feeding as well and it makes no difference. He doesn't like Tommee Tippy bottles.