Beginner friendly recommendations for teen who wants to explore kayaking

My 13yo boy (currently swimmer level 5, most likely atleast one level up next summer) has been quite keen on kayaking on his own. We live north of Toronto and go car camping multiple times every summer- usually along Lake Huron. We tried Algonquin and Killarney this year and we really enjoyed our trips. Both my husband and I are non-swimmers and have only done canoeing once (I have limited shoulder mobility and can’t really canoe unfortunately). Although my son does kayaking at summer camps, I am a bit worried about his safety while we are camping.

For seasoned kayakers, what advice would you give him and as a worried mom, me to let go of the fear and honour his wishes to explore? Any campground/ lake suggestions that are beginner friendly, not too remote and there are usually people around? He has promised he would stay closer, at least until he is a little older and develops the skills. I am also hoping to sign him up for classes next season as we have a lake nearby where they run summer lessons.

Thank you.