I agree you need to do what works for you.

I was lucky enough the DD slept through and was not feeding over night at 8mths, every now and then she would have a very unsettled night and the last resort was her bottle but otherwise she was fine without one.
Although i do know that at that age they say that if they do feed overnight it should only be 1 feed ??

I didn't swap DD to food before bottles until she was over 10mths old but i found if she had food first then her bottle an hour later she still took the same amount.

GL and do what works for you, aslong as they are gaining weight and happy and healthy and if it's not affecting you then keep it up.