My Canister ceiling light bulbs, LED 65, BR30 burn out too quickly
Heavily insulated can lights are a Bad, Bad thing for LED bulbs - LED bulbs are already compromised in their cooling ability by being forced to fit in an envelope that is similar in shape to an incandescent bulb. Stick it in an IC can fixture with no airflow and insulation all around, and it gets hot. Heat kills LEDs and heat also kills LED power supplies (what turns 120/240 VAC into DC current and voltage proper for the LED module itself.)

Given the price of LED bulbs, you are probably not saving money .vs. using incandescent bulbs that can take the heat, or somewhat more efficient halogen bulbs that LOVE the heat if you are killing a bulb avery 3 months.

A non-bulb-shaped LED retrofit module can have somewhat better cooling designed in. One of those might last longer, though I note that ones I have specify a life of 35,000 hours in IC fixtures and 50,000 in ventilated fixtures, so even there it's definitely hurting the life. 

Replacing the entire fixture with a designed-from-the-ground-up LED fixture that has effective cooling built in is the best option for long LED life. If you are not going to do that, I'd suggest looking for Halogen incandescent bulbs and not killing any more LED bulbs in these fixtures.