Sorry I'm sure you get thousands of these threads but I just want to ensure I'm doing it right.

My royal is almost 4ft long weighed at 1030g.
I fed on Monday a f/t jumbo mouse which he struck brilliantly. He was active for the rest of the evening head raised.
I didn't want to overfeed so I left him.

Was this the correct way to go the person who had him before me had him on chicks and mice.

I would like to switch to rats but was anxious about making sure I've seen him eat a few times before I take on that potential battle