I have a lack of diagnostic equipment these days, and my limited experience of both battery and starter failures (one each, both in the 70s, and the starter failure was due to a sticking solenoid) over the years is not a good guide.
If the vehicle is slow starting in the morning, when everything is cold, but performs well at other times during the day, that is an indication that the battery may be getting weak.
Some battery maintenance is always advisable, checking the water level if possible and adding distilled water.
But if the vehicle is hard starting even when it is warm, and the battery should be well charged, that is an indication that the starter is beginning to fail.
Unfortunately, they can occasionally fail in a rather catastrophic manner, as I learned recently, taking some of the electrical systems and electronics with it.
Dive by post. Glad to see y'all in good spirits tonight!