I have 2 grandchildren in another country who I hadn't seen for nearly 2 years because of Covid. Parents sometimes ring on WhatsApp for video chat, but children (nearly 5, and just 6) have little interest. The older one will now chat a bit or show me something but younger one (boy) hides when he sees the phone!
When they visited, they were fine with us, but the boy is not into hugs and not very chatty. However, if you don't have too many expectations and give him time to get to know you again, it will probably be fine.
Interestingly, the older one, who was 4 at previous visite remembered lots about our house and garden, whereas younger, who was 3, seemed to have no memory of being here before. Children don't seem to form long term memories until 3-4 years.