I use extra thick eye drops right before bed and wear [this eye mask](Sleep Mask for Side Sleeper, 100%... https://www.amazon.com/dp/B07YSNNFY3?ref=ppx_pop_mob_ap_share) to sleep.

If you’re using an F20 or similar it’s basically impossible to wear a sleep mask because it goes up between your eyes. I use the sleep mask with an F30 when I can get it to seal.

Edit: I guess maybe product links are banned, but the eye mask is called “side sleeper eye mask” on Amazon. It has concavities for your eyes so there’s no gapping underneath for air to blow in.