I have been playing violin for about 6 years now, and I can read music for it pretty easily. The thing is, I attribute that to me having the muscle memory related to positions on the violin, as I don't actually understand the intervals themselves.
I have also been singing in several choirs in the last year, and this new choir I just joined accepted me even though I can't sight sing, because they deemed it was good enough that I could read the bass line rhythmically and that I could replicate the notes of my fellow basses on the fly.
However, I don't feel like it's enough. I feel like I am being a drag on the progression of the choir because I can't just grab the music sheet and know what to do right away. I was trying to figure out how to sight sing, and I was wondering if anyone had any hints on how to do it, and how long it should take, considering the following:
I don't play the piano, which makes it harder for me to replicate bass lines easily. (I could, of course, play on the violin but transposing is something I find exceptionally hard, specially across clefs.)
My musical theory knowledge is not very developed. I understand the sheer basics needed to play the violin at a recreational level.
I don't have a music teacher right now. I.e. I would be learning to do it by myself.