One thing to try are the over-the-counter products that market themselves for high heels. They are called metatarsal or ball of the foot pads. They are oval-shaped pads that go under the ball of the foot, usually made from a silicone gel. They combat soreness under the ball of the foot. Especially if it’s made of silicone, it will hold your foot more steady in the shoe so your feet aren’t sliding forward as much, which will protect your toes from friction and blisters.
Keep silica gel packets in your shoes when they’re not being worn. Have you noticed after purchasing a pair of new shoes those little white packets containing tiny clear balls inside your shoe box? Those packets contain silica gel which absorb moisture and keep your shoes from shrinking. Hold on to those packets instead of throwing them away and stick them in your shoes when you’re not wearing them. You can ask a shoe store associate for extras, if necessary.