Sounds good to me! I wish Ashleigh slept that much at that age, we had very bad time settling her during the day. All bubs are different and sleep different amounts, even now at 21 months there are toddlers in my mums group who'll have 3 hour days sleeps and others (like mine) who have none! They just all vary so much. If he is tired let him sleep otherwise you'll have terrible time settling him once he gets overtired. From memory I think its around this 3 month mark that they do start to 'wake up' and become more awake during day.