At 15 months, how much should the LO be talking ? My LO is only saying very simple words like "NO", "Ma Ma", "drop" (he always drop his toys from the high chair), & other babbles .. unlike my elder one who already spoke simple sentences at 18 months .. Are late talkers and walkers slow learners ??

My LO started to learn to walk after 1yo, he didn't crawl much as well. number 1 rule for me:no baby talk, no double words, simply can't stand double words... speak in simple sentences. not necessary to get child to repeat after you. be a recorder. keep saying your sentences, they will catch up in the end. write down the words they are saying, keep track so you can address your concerns when you bring child for the routine developmental check up. my LO started speaking late, I continued my sentences. now at 2y8m, he can say "mummy where my blue car? mummy find my blue car please. there, I found my blue car". start with single description (naming), e.g. car! once child can say car, use 2words e.g. xxx (colour) car! then sentence "I see green bus!". encourage child to use personal pronouns, e.g. I, me, my, do not encourage them to say their own name. so if LO says "drop", u can say "you drop the toy?". hope this helps. no worries ok? :)