Newborn Sleeping

Mrs. S

My now 7 week old sleeps 5-7 hours a night starting around 8-9 pm. He has done this since week 4. Is that normal? He eats 100-115 Ml every 2-3 hours (the rest of the time) and has since he was 4 weeks old. My 3 year old didn’t sleep like that until she was 3-4 months old. I know he’s gaining weight and growing as we are moving up clothing sizes and he’s starting to fill out more.