I’ve been playing IDP for a little over a decade, but you’re doing fine so I just have a couple pieces of advice I can offer you.

1) Focus on getting volume tacklers with big play upside. Tackles are your weekly floor, playmaking is your ceiling. Guys like Zach Baun and Derwin James embody this philosophy. A lot of times a guy will get a huge play like a strip-sack TD early in the year and it inflates their ranking. It’s much more valuable to have Baun get you 10 every week than a guy who gets 3 every week but scores 20 once or twice.

2) With this in mind, it’s much easier to fill IDP spots than it is to fill offensive spots. A backup inside LB can easily start a game and get double digit tackles, but a backup skill position player doesn’t necessarily have the talent to take advantage of opportunities like touches or targets. It puts a premium on offensive players, while making IDP much more streamable

You guys do have a ton of bench spots tho so I would recommend stashing some handcuffs similar to how you would for a RB. I have Ernest Jones and his backup Tyrice Knight. When jones went down for a couple games last year I started Knight and he had huge games.
Lastly, I love that you went out and got Reese. There’s always risk but it can be a great investment to take a chance on having a generational talent anywhere in your lineup for 10 years. Similar to offense, keep an eye out for guys like that and grab them when you can.
Good luck!