Examination of conscience and act of contrition during LOTH

I have a question. I regularly, at morning and evening prayer, do a quick examination of conscience and act of contrition. I don’t have a vehicle so rely on someone else to take me to Mass and can only get to confession once a month or so.

Am I doing this too much? If I had the ability I would go to confession weekly. I don’t find myself committing mortal sins very often and still confess my venial sins.

Is it okay to do this during the LOTH as often as I do?