The only routine I have for my 5 month old is feeds during the day. 1st one is between 6-8am (he has fed at 5am as well, so not really first feed) and then 11am, 3pm and 6.30pm. Bed by 7pm. I am strict with that.
Have just introduced solids and am giving him one meal at 5pm. keeping milk feeds the same. The next meal I introduce will be breakfast, prob about 7.30 as he usually goes down at about 8am for a sleep.
xo