Now what?

Ok, so Mac is really keeping me on my toes.

His routine use to be pretty predictable which is why I never set a routine for him.
He'd feed 2.5-3 hourly and in the evening he'd be awake basically from 5pm-8/9pm then sleep 7 hours.

Recently he's started sucking his thumb. Now his day sleeps are extending out and he's feeding maybe 4 hourly. And last night, he went down to sleep at 6pm and slept until 10pm.
I have gone in to his room when I expect him to be waking and he's there sucking his thumb. Sometimes he has his eyes open, sometimes they are closed.

I don't mind his new evening routine, makes life great for us to have our dinner and time alone and it's also teaching him day VS night. But daytime is bugging me. I'm worried that if he's not feeding as often that my supply will go down and also that he won't be gaining as much weight.
I've also found he wants less awake time between his sleeps and I think this is cause he's actually been awake for awhile but was just quiet cause he was sucking his thumb.

So, what do I do?
Do I wake him 3 hourly during the day? Do I just leave him to sleep and wake when he wants?

I'm thinking of waking him or if I go into his room and he's sucking his thumb but eyes open, I'll get him up.
But I hate setting routines and making him "comply".

Also, if I choose to wake him 3 hourly, do I count 3 hours from the time he fed, or 3 hours from the time he went back to sleep?

Yip I would leave him to sleep.

My DD has just gone to 4 hourly feeds ( I wondered why she wasn't taking much at 3 hours). I often look in and she is just sucking her thumb staring at her mobile, then will look in 10mins later and she's fast asleep again.
He will let you know when he's hungry. I was doing the same and just feeding her at 3 hours because that's how often I thought she had to feed, but now realise that she wants more milk less often. It's also helped her daytime sleeping.

I personally would leave him, if he is sleeping well and content to lay awake in his cot/bassinet then lucky you.. many of us would just die for our babies to do that!!!!!

He will be taking what he needs and that will mean your supply will be what he needs... it will start to settle down nowish anyway so you wont get that full/empty feeling (unless you miss a feed entirely) soon.

More often does not necessarily mean more milk... if he is being woken then you may find he doesnt feed well because he is sleepy and then you could end up with the opposite.. a bad sleeper and a bad feeder!!!!

Its our nature to second guess when things are going well, I say enjoy it!!!!

Oh and 3 hourly or 4 hourly, is a complete cycle so from the start of one feed to the start of the next