Remembering back (and reminding myself for the near future), one thing I struggled with was the constant change of the schedule. Within the first year, I had to adapt my sleeping schedule three times: the first three months our daughter refused to be breast fed, so my wife and I split parenting duties, I took the late night shift until 3~4 am, after that it was my wife’s turn. After three months, she wanted to be breast fed, which gave me more sleep, but not tons. (Sometimes we just had to change diapers …). The third phase started after she was weened off just before entering day care.
My goal for that time next year is to maintain my current fitness, anything else is gravy.