Babies smiling more often nowadays

I think happy babies smile more often and their smile certainly gives us a certain level of satisfaction that both of them are most likely to be happy too. Joshua seems to be able to sleep a stretch of 5 hours and Josiah hit about 4.5hrs lately. Its likely that their REM sleep are reducing and they are able to sleep deeper and longer. Felin and I are feeding Formula milk in the last feed of the day and see how far we can stretch them through the night. We are still targeting at least 12MN to 6am without waking up.

I have been sleeping at 2-3am lately and I went for a Value Investing course early this morning and interestingly, I didn't sleep through the lesson despite having only 4 hours sleep. I reached home at 7pm, had a quick dinner and its playtime with the babies. I have been reaching home after 9pm during the weekdays and I am forbidden to talk to them because it will make them active and refuse to sleep. In my usual playtime, I just kept talking nonsense to them and they will reply me occasionally with their baby language. Its getting a bit more fun nowadays that they will smile and respond. They will also react to our voices and turn their head to look at me. We just started taking lots of pictures.