I worked on a 45 minute primetime drama for two seasonsawhile. Usually the cycle was a week for a crew of about 5-6 like yours. 2 days is unreasonable unless they are willing to pay through the nose, or want a bad sounding track without foley and ADR.
It was quite a grind, but fun and like completing a half a movie in a week. I learned a lot.
It broke out roughly like this:
Day One: Delivery of sound rolls, omf, and final cut from picture department. Digitizing of production sound and building a production sound assembly for the dialog editors. Delivery of picture to sfx editor, foley, and dialog editor for spotting.
Day Two: Dialog and SFX edit. Foley is working. Potential delivery of a picture change and conforming. ADR/loop group is scheduled.
Day Three: Dialog and SFX edit. ADR/loop group is recorded. Foley is working.
Day Four: Foley is delivered and cut. ADR/loop group is cut. SFX cutting is finished. Music is delivered. Elements are combined and a session is built for the mix stage.
Day Five: Mixing.
Day Six: AM mixing, then a review. Mix/sfx notes are addressed.
Day Seven: Potential last minute mixing/sfx tweaks, final review and print-mastering, delivery to network.
Day Eight: It starts all over again until the last episode is done and then we drink a lot of beers.