Nagarjuna was a puthujjana philosopher who tries hard to pass his speculation for the dhamma, so you will never get enlightened by basing your life on what he says, not even doing meritorious deeds, since the people who follow Mahayana even fail to stop doing bad deeds, because they fail to clean their mind.
For the vedanta, it is completely normal for puthujjanas to reject the claims of the buddha about what is anatta, and it is completely normal that the idea of atta, oneness and all that appeal to puthujjanas.
Since wisdom is what clearly separates the dhamma from the various wrong views created by puthujjanas, you can still focus on sila and samadhi, from whatever wrong doctrine appeals to you currently. The only thing is that whatever samadhi you will get will not be tainted by right view, so you will still crave for bhava , if not still have Kama tanha, because the wisdom part of the dhamma is the nekkhamma and more generally the avijja viraga, ie '' the practice for the disenchantment, dispassion, cessation, relinquishment, forsaking of the present form'' and more generally whatever is conditioned.
This is what puthujjanas hate the most about the dhamma and it is precisely this which separates the dhamma from whatever wrong views puthujjanas create. For instance, the people who love vedanta completely fails to see that vinnana is conditioned so they fail to stop bhava tanha or whatever normal devas crave.