For a weekend in Bangalore, I would keep the plan simple and relaxed.
On Saturday, start with Lalbagh Botanical Garden in the morning. After breakfast, visit Tipu Sultan’s Summer Palace and explore the nearby Basavanagudi area. In the evening, head to Indiranagar for dinner and some time at a café.
On Sunday, visit Bangalore Palace in the morning. Then explore Cubbon Park and Vidhana Soudha. You can have lunch near Church Street or MG Road. Spend the evening exploring local shops, cafés, or a quiet area of the city.
Try local food during the trip. Dosa, idli, vada, and filter coffee are good choices.
I would avoid adding too many places to the plan. Keeping each day focused on nearby areas will make the weekend more comfortable.