A DMT stronger than Tecfidera but not as suppressive as Gilenya

I made the switch off Gilenya at the beginning of this year to Tecfidera. My quality of life had sunk down on Gilenya due to its suppressive qualities & dealing with other infections, toxic mold, etc, that my body just wasn't able to fight off very well. Unfortunately my latest MRI showed a bunch of new lesions so the Tecfidera isn't strong enough. Anyone know of good options? Something in-between the two?