Grab a pen love, let me save you some money
Don't worry about routine for at least another 4 weeks, it will only stress you out, it's also good to let him find a little bit of a pattern himself!
I have 2, 3yrs and 1yr.
I read every childcare book before DC 1 came along! I found out of all the books there really are just a few simple rules to stick to without watching the clock or being on edge if he doesn't sleep to the designated length of times!
I find a great golden is never let a baby stay awake for more than 2 hours. At this stage it doesn't matter if it's only been and hour but never ever more than 2. After that they are over tierd so won't settle well and cry and moan alot.
Those naps are very important if they are to be good sleepers at night in the long run. Dont car what time or for how long, a naps a nap.
At your DC's age 3 naps a day roughly does it.
I think it's around 4-6 months they only need 2 (cant remember).
This bit is very important so come a bit closer for this secret
, when your DS is around 8 weeks, give him a bath every night at the same time, his feed every night around the same time and settle him around the same time - I know, rocket science but it is VERY important.
Mine both settled at 7pm with one feed inbetween by 3 months and slept 12 hours by 6 months. Both breast fed. Man im smug 
There you go, see, i've saved you money and reading time. I wish someone would have done that for me.