I'm try in read your post and answer.
You can tube feed for weeks!, my husband prefers to tube feed the wee lambs in the hope of twinning it on to something. He says it's easier to twin if tube fed. Me, I percevere to put them on the bottle. It can take a few turns and patience but they will take a bottle. I try putting the teatin the mouth and squeezing it so they get a taste of the milk, so the hungry lambs take onto it quicker.
If you bottle feed, the lamb will associate you with food, you're the mummy! Tube feeding is quick and less personal!