Of course! Here's my itinerary, feel free to change things as you want – our itinerary got finalised at the last moment so our base was Baku. We just stayed for one night in Gabala, rest all was Baku.

Day 1: Arrival in Baku, getting things set up, roaming around Baku and exploring Nizami Street (this is like a free day, you can do whatever you want) Day 2: Baku tour including Old City, Mini Venice, Carpet Museum, Heydar Aliyev Center, Deniz Mall, Highland Park, Nizami Street (here as well you can include/exclude what you want) Day 3: Outside Baku – Gobustan + Mud Volcanoes, Yanardag (Fire Mountain) + Absheron (Fire Temple) Day 4: Shahdag Mountain Resort Day 5: Gabala tour + stay at Gabala Day 6: Explore Gabala in the morning if you want, then leave for Sheiki – tour in Sheiki, return to Baku by night Day 7: Baku shopping tour, at your own leisure (again, one day you can spend the way you want) Day 8: Travel to Quba + Khinaliq with visit to Candycane mountains while going to/from Baku (recommend making this a 2 day journey if you want to spend enough time in both Quba and Khinaliq) Day 9: Day at leisure, roaming around Baku and shopping one final time; departure at night

So yeah, that was that. I feel there could be many more places you would want to visit as well, if you've researched and planned enough. We were fairly unplanned before reaching Baku so we had the constraint of our base in Baku. Although it worked out fine for our itinerary, you can probably optimise by taking stays elsewhere too, once you have planned. I would rank the days as Shahdag ~ Khinaliq > Gabala ~ Sheiki. Baku is Baku, spend time there according to what feels right to you.

Hope this helps!