Mom, can you tell me something? We're seven months old now. At five mo…

Mom, can you tell me something? We're seven months old now. At five months, our son started crawling on all fours, he was rocking around for about a month. At five and a half months, he began crawling like a frog. At seven months, he started standing up on his knees against the support. And in recent days, he sat down, stood up from his knees against the support. He gets up on all fours, sits down from them. But only occasionally crawls on them, always almost like a frog moving around. I tried to stimulate him as much as possible, but he does it his own way. Is this normal? Do we need to do something? Because I heard from all the masseuses on the