"at least this often"
means
2 Answers
a menos tan frecuentemente como ..
Nuestra tía nos visitaba a menos tan frecuentemente como el médico.( Our aunt visited us as least as frequently as the doctor did. ) . o tanta con frecuencia..
I'm sure there must be other ways of saying this, possibly better ones.
Putting it in context
Algunas arañas mueren después de hacer amor.
Estoy feliz que me no hago el amor , a menos tan frecuente, o con frecuencia.
Some Spiders die after making love,
I am happy that I do not make love, at least as frequently, or with frequency.