Visiting Andalucia. Is it too packed?

hello. Me and my friend are visiting Spain for the first time and we only have 7 days. we booked the flight but now we want to kind of cancel we’re panicking about how we’ll be jumping from train to train, but apparently that’s the only way to explore lol. can someone tell me if my itinerary is too much or is it doable Will we enjoy it or will it be exhausting cause of transportation. we’re booking 4 hotels. i need honest opinions

Day 1. arrive in Malaga at 11 am. explore the city. sleep there

Day 2. train from Malaga to Seville. explore a bit of Seville and sleep there

Day 3. Cordoba day trip from Seville. Sleep in Seville.

Day 4. spend a whole day in Seville. Sleep there for the last time

Day 5. Train to Granada. Explore it a bit alhambra today or next day. sleep in Granada

Day 6. Alhambra in the morning. Train to Marbella. (I heard theres only buses or ubers to Marbella though) Sleep in Marbella

Day 7. Morning in Marbella. Leave from Malaga airport