Btw, I've heard that acoustic guitars have tougher strings and wider fretboard spaces between strings/frets than an electric, so it's to be expected a little more difficulty. Perseverance is key and eventually your finger calluses and hand strength will improve with continued patience and practice. Try alternating between other chords, for example, G chord (the hardest to learn besides A Chord). This will strengthen your fretting hand adequately enough to play other chord shapes. 2 months is a very long time to focus on just one chord.

All the best, Drake