In this time of the season i also have always, 3 to 5 players injured, the engine is so predictable, the first to get injured is always a MC, the second a MC or ST, its the same thing all seasons.
You are a high level manager, so you know how to play the game, i think the only thing you can do is not waisting red packs, healing injurys under 6 days, that is what i do and in 9 seasons in my main team i have 250 reds, in all the others at least 100.