i may not be a 'mother' - but i am a very involved father so i hope i can offer something to you anyway
Layla is now two months older than two and a half
and i started having some of the same worries as you..but the two biggest differences in my Layla's development so far have been:
(1) - i started sending her to daycare three times a week (three half days) just for social development. This is HUGELY important because she is now around other kids her own age and hearing how other kids speak (or try) and communicate. This has made the biggest impact on her and she absolutely Loves going.
(2) - i started reading her bedtime stories every night. I read with her during the day as well, but she's too mentally erratic during the day sometimes where it's obvious she wasn't paying attention, so the bedtime story is more effective because she's relaxed and is on her way out and simply enjoys the stories (and the pictures) more at this time.
plus ..this has always been, but just to make sure...
... lots of praise... even if she/he is still saying it wrong, they're still kind of right, they just need time polishing their verbal skills.. let them know they're right so they and they'll work on it .. next thing you know, they say it proper and you're like WOW.
Hope that helps in any way.
enjoy and good luck.