How to spend one day in Black Forest

Presumably you had a reason for wanting to visit the Black Forest area; what was it? Many consider just a driving tour to see the natural beauty of the hills and forests, but I'm not sure how much that would apply in November. Obviously Titisee would be out of season. Without a baby, I would have suggested a day at the spas in Badan Baden, but...

As a side note, much of the area ( other than that part north of Baden Baden) is well south of the direct route between Strasbourg and Nuremburg which are only 3 1/2 hrs apart by car.
I found a tourism site for the Black Forest that gives places to see. Perhaps something there will be of interest. https://www.planetware.com/tourist-attractions-/black-forest-d-bw-bf.htm

Not technically in the black forest, but we absolutely loved freiburg.

If you need a hotel in Nuremberg, I HIGHLY recommend Hotel Victoria.

I dont know exactly where it is, but we really enjoyed the Black Forest open air museum, with its collection of very old farmhouses and out buildings. If you have an interest in history, and cultural development..

I second the open air museum. Not far from it are several really AMAZING waterfalls. Those are also worth checking out. You wanna go to the interior area in there if you can. That is where all the pretty postcard Germany is located that is "forested"

I would third the rec for the Vogtsbauernhof Open Air museum - I spent the afternoon there and loved it. It's outside of Gutach (Schwarzwald) and easily reachable by car or train. You walk through idyllic scenic surroundings and visit the historic farmhouses - it's perfect for someone with a baby. Here's is their website, which includes directions for getting there by car. https://www.vogtsbauernhof.de/en

There are also several restaurants across the road to stop at if you like.

Note the museum is only open till Nov. 6 this year, and the OP is traveling in late November
https://www.vogtsbauernhof.de/en/visit

I would recommend/consider Saig bei Lenzkirch above the Titisee. Not much there, but some nice places to stay and you can see the Alps. I would also recommend the Feldberg, but I do not know if the lifts are running in November. You can visit the falls and shop until you drop for Cuckoo Clocks in Triberg. As noted many water falls to visit, but you generally must hike up and down. Another option for overnight: https://schloss-weitenburg.de/

Since you are headed on to Nürnberg, I would suggest staying in the northern BF. My first day ever in the Black Forest was in the little northern BF town of Alpirsbach, and I remember noting it for the beauty of the surrounding forest. Close by is the large spa down of Freudenstadt, with a huge arcaded town square and a more traditional German Therme, Panorama Bad. Both are just a little ways away from the Black Forest Open Air Museum outside of Hausach.

Freudenstadt is a little ways SW of Stuttgart, from which you can continue your trip to Nürnberg.

Second to stay in the northern Black Forest (though Vogtsbauernhof is a good recommendation - if its fits into your itinerary). Drive to Baden-Baden on the Alsatian or German Motorway, then take Schwarzwaldhochstrasse (B500) for some real Black Forest panoramas, woods, valley, vistas of the Rhine valley on clear days. Stop at Mummelsee and walk around it (roughly one mile, good path-though not 100% buggy-proof/not too crowded in November) and then continue to Freudenstadt for a stop there. Later use B28 to the motorway at Horb, pass Stuttgart A81 and from Junction Weinsberg the A6 to Nuremberg.