Should I unfollow him on Instagram?

We are not very close, however I see him every now and again because our families are close and we somethings go on vacation together or sleepover at each other's houses. I was convinced he liked me for some time, many people were. However as of late I'm not so sure. He used to like all my Instagram photos and now rarely likes any. Things between us have just seemed distant and awkward recently... I think by unfollowing him, it will send a message. However because I have known him for so many years, I'm hesitant. Although our friendship is not the strongest, I do not want to destroy it completely or seem rude. I guess I figured if he doesn't like me, he won't mind. However last time I unfollowed him (which was many years ago) he inquired to me about it... Please help, what should I do?
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Should I unfollow him on Instagram?
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