Older ball python/feeding

[Wharf Rat]

Hi all, just curious of opinions on this.

A little background:
I got my first ball python in October 1994 when he was about a year old, just a guess based on size. The pet shop where I got him had no information. Well I still have him. He's somewhere between 24 and 25 years old now. Great pet! Normal BP. Honestly just always assumed he was a boy, but never sexed, so could be female. He/she is pretty big! Over 4 feet long and as of yesterday 2419 grams. Never had a health problem, only bit me once about 18 years ago. Eats like a champ! Been on medium rats every 7 to 10 days for the last 15 years or so.

So... I never worried about his weight, his size, as long as he shed, ate, pooped, maintained weight, it was all good. I never weighed him until a month ago. First time ever. October 4th he weighed 2220 grams. So I weigh him yesterday. 2419 grams. That was a day after he shed and pooped, no food for about 10 days. Yet he gained 200 grams in a month.

I'm just wondering, should I keep him on medium rats and maybe feed every 2 weeks? Should I just keep him on weekly mediums? Switch him to smalls? He seems healthy, content, just never really thought before that he's getting old and may need to lose weight... Curious of others opinions on this.

I'm not concerned, just curious and want to keep him healthy and happy for as long as possible.

Thanks