I am iterating in current days, so need little assistance

for (int I=-1; I<30; I++)
{
 for (int J=0; J=30; J++)
 {
  for (int K=1; K=30; K++)
  {
   SELECT rowid,Month, Day, Advice 
   from MainCategory 
   where Month= 'May ' 
    and Day in ((cast(strftime('%d',date('now','I day')) as Integer)),(cast(strftime('%d',date('now','J day')) as Integer)),(cast(strftime('%d',date('now','K day')) as Integer)));
  }
 }
}

What if i want to go in reverse order also

for (int I=-1; I<30; I--)
{
 for (int J=0; J=30; J--)
 {
  for (int K=1; K=30; K--)
  {
   SELECT rowid,Month, Day, Advice 
   from MainCategory 
   where Month= 'May ' and Day in ((cast(strftime('%d',date('now','I day')) as Integer)),(cast(strftime('%d',date('now','J day')) as Integer)),(cast(strftime('%d',date('now','K day')) as Integer)));
  }
 }
}

On every previous click, i want to fetch 3 records so do i need to iterate till 3 or make it on all record 30 in a month from which i want to fetch.