I’ve never done an IDP league, and while I’m comfortable enough with my knowledge of defensive players in general, not knowing how real life relates to IDP scoring makes it tough to call on that front.
… But offensively: Definitely would be trying to upgrade at RB! Not sure if Zeke is the answer, as I’m sure you’ll have to bankrupt your team elsewhere to get him, but first order of business should be to somehow acquire Kalen Ballage.
Secondly, I would be trying to trade Devonta Freeman for draft picks. Same with Allen Robinson. Your team is a little old and injury prone, so I would try to swap out the higher risk guys for picks in order to add a stronger collective of young RBs to take over.
Go after David Montgomery, Miles Sanders, or Josh Jacobs early, then with some 2nd and 3rd rounders target Devin Singletary, Justice Hill, Darwin Thompson, Darrell Henderson, Bryce Love, Ryquell Armstead, etc. I would do everything I can to get younger and add more depth at the position, because right now you’re an injury or benching away from real trouble.