It's great that you have got her taking a bottle, well done.
If she's taking 150ml every 2 hours you may actually be giving her more than she needs. Personally I would not feed her more frequently than every 4 hours, now that she is taking the bottle.
She will be missing her mum and she will really appreciate cuddles and snuggles, and being talked to, and I would give her some fuss each time I visit, and not offer a bottle straight away. As you snuggle her, she will start to quest for a teat, so then if it's a feed time, you can offer a bottle.