[aidenn0]

Using cal from util-linux; if you are okay with horizontal:

    cal -w -n3

If you must have vertical:

    cal  -w today; cal -w '+1 month'; cal -w '+2 month'

Output:

           June 2022       
       Mo Tu We Th Fr Sa Su
    22        1  2  3  4  5
    23  6  7  8  9 10 11 12
    24 13 14 15 16 17 18 19
    25 20 21 22 23 24 25 26
    26 27 28 29 30         
                           
           July 2022       
       Mo Tu We Th Fr Sa Su
    26              1  2  3
    27  4  5  6  7  8  9 10
    28 11 12 13 14 15 16 17
    29 18 19 20 21 22 23 24
    30 25 26 27 28 29 30 31
                           
          August 2022      
       Mo Tu We Th Fr Sa Su
    31  1  2  3  4  5  6  7
    32  8  9 10 11 12 13 14
    33 15 16 17 18 19 20 21
    34 22 23 24 25 26 27 28
    35 29 30 31