Perhaps it might be useful for the two of you to sit down together to have a proper discussion about what you each expect from this new stage of your life together. Maybe both write a bucket list of things you want to do while still physically able, a general overview of how you’d like to spend each day (eg, what time getting up, meal-times and kind of food, social and private times, bedtimes). I’m guessing your lists won’t entirely match, but you then have some material you can each offer to negotiate.
For example, you might want to get up at 8 and have a sit-down breakfast, while he may want to lie in and then mooch and eat. You might agree after discussion to follow your pattern on weekdays and his at weekends. Or you might suggest you go off and do social things earlier in the day while he mooches at home, and then meet him after lunch. Maybe he doesn’t want to find things to do! Many people prefer to potter around, do the odd thing here or there, and fill time with TV, books or just sitting in the garden thinking.
You can use this meeting to divide up domestic chores and cooking. What time of the day will you have your main meal? How often will you eat out or have a takeaway? Will you eat at the table or on trays in front of the TV? Your own eating and sleeping patterns will inevitably change when you retire, so plan purposefully what the change will look like for both of you. I have a friend who discovered to their horror on retirement that their spouse expected them to sit down to sandwich, soup and salad every day and have meaningful conversations, when their working day practice had been to grab a coffee and a pasty and do paperwork over the lunch hour. It escalated to resentment and rows, and ongoing misery.
You probably can’t get him to manufacture oomph, but if you can agree on sharing domestic duties and routines, and both have time to do what you want, it should be quite possible to devise a pattern of living that suits both of you.