Six months.

 September

28th - Archie arrived in the world.

October.

3rd - Heel prick test (everything was fine)

23rd - Hearing test (everything fine)

28th - First smile. 

November.

2nd - Starts babbling.

26th - First jabs

 December.

5th - Rolls belly to back.

25th - First christmas.

31st - Second jabs.

January.

6th - First laugh (to soft kitty song from the big bang theory)

28th - Third jabs.

 February.

There were no milestones this month, but his hand eye coordination greatly improved.

March.

11th - found his feet.

13th - sitting unaided.

14th - First word ; Dada.

16th - First swim.

26th - Rolling back to belly.