You’re talking about adding 10% to deadlifts and 7% to bench without adding any appreciable weight or using AAS, in less than 6 months, as an already veteran trainee.
To get what you’ve never gotten, you must do what you’ve never done. I propose a radically different training approach.
I think if you want to do that, in those constraints, I would focus all of my recovery on doing the things that most directly build those lifts. Specificity & frequency would be the name of the game for me. I would have 3 pressing instances a week & 2-3 lower, probably over 5 days of work per week initially then tapering to 4. At first I would have one instance of comp bench & deadlift a week and fill the others with variant builders like closegrip bench, floorpress, incline press, seated military, JM presses, Spoto press, concentric/pin presses & deficit deads, Blockpulls, good mornings, rack pulls, band-lightened deadlifts, sumo pulls, speed work vs chains or bands, RDLs. Any accessories would be very minimal & specific or for health (GHR, leg curls, bracing work, Skullcrushers, Pressdowns, Facepulls, Pullaparts, Hammercurls) because it’s most important to press 3 times a week in that scenario vs lots of bodybuilding (since you are gaining no appreciable weight).
As time moved on I would make the non comp days more and more specific (good mornings become RDLs become deficit deads), and towards the end I would lower frequency a hair to aid recovery as the weights get more intense.
This would require a ton of mapping out prior, and even more auto-regulation to manage. But I don’t think backing off squats for some extra pulls is going to cut it. I also don’t think boring but big is useful in an isocaloric environment for someone focused on raising strength without size.