Eat wake sleep routine

Therese

so I’ve been trying to implement the eat, wake, sleep routine with my 3.5 week old during the day. He drinks about 3-4oz every 3ish hours sometimes only 2oz depending on last time he ate. But he’s gotten used to having like 3oz and then 45min-1hour when he’s tired he looks for another bottle which he usually only takes a half oz to an oz of to soothe himself to sleep. How can I stop this?? I know he might be to young to worry about but I don’t want it being a habit. I’ve tried pacifiers but as soon as he spits it out he loses his mind. Just now I let him cry a bit, went in and rocked him a little with paci, put him down, let him cry for like 2 min and now he’s passed out. (Now he’s up polishing off 2 oz and is asleep. Mind you he had 4oz at 955) I’ve done sleep training with kids as a nanny but they were much older...like 6-7months. Or am I just way ahead on thinking he’s old enough for this? At night he does fall asleep with a bottle but always takes 4oz (I did it with my oldest and never had an issue breaking it as he got older)