6 month old trying to walk.

My son just turned 6 months on the 13th, he’s been very early for each milestone he started standing up 3 1/2 weeks ago. He started crawling at 4 months and sitting up at 3months. My mom always tells me it’s because of another baby lol I doubt it, I’m on birth control and I’m putting me trust in my iud 😂😂. But anyways he’ll crawl normally then start bear crawling and just standings up. He also stands up on the couches in the living room and stuff, is it a little too early for that?