You can try to use gradient method to eliminate interference peak first. U can start with 100% flow of water for a few minutes before you change to your real mobile phase composition. All the best
You can surely change your mobile phase, change the solvent.
Or dilute your sample in the mobile phase maybe it may work for you. The thing is that sometimes the mobile phase can absorb more in that wavelength that your analyte, you may choose a mobile phase that does not absorb at that wavelength