dunno where you are
i'm in south fla in an area nicknamed 'glass alley' (bougainvillea thorns, wild tobacco, glass (open container law state so glass all over, radial wires)), i've been "taps wood" flat free for 1.5 years
have you asked your bike store (lbs) about liners like 'rhinodillo' 'tuffy' 'stop flat' (in the order of preference)?
they do quite a bit
also armored tire (conti touring plus, gatorskins, schwalbe upper end ones)
me, i go almost whole hog: armored tire (conti touring plus 700x37), liner (rhino dillo 700x35-45), i COULD ADD: remove the valve core, drop inject a small amount of stans tubeless liquid into the tube, replace valve core and inflate, but i don't want to replace the tube every 2 years cause the stan's seized up and it feels like ping pong balls in the tube, yes stan's over slime....if you carry a patch kit, don't use either, which is why i don't or...carry isopropyl wipes, if you got medical ask your doc for some
ooh and weekly pressure checks on 26/700 large (down to 32)
daily to semi daily on small 700 (28mm)
of course, up on toes when taking a 'hit' (pop a wheelie and get outta saddle and onto feet in a slightly toes down position) when going up medians/curbs)
hope this helps
nobody should have to count their flat count in 'month'....months maybe, half years to years preferably