Initially when I started my career, I had 6pm to 5am shift. And I didnot like my work at all, it was like a call centre.
But you have an advantage here, since you like your work. And 3am is honestly not bad.
I would say give it a try for 2 months. It takes our body rhythm this much time to adjust.
And most importantly please keep an eye on what you eat and exercise everyday.
There is a tendency of people working in night shift to maintain bad health. So please eat fruits , eat salads if not fancy ones at least basic ones.
Night time don’t eat heavy food. And limit your beverage(tea or coffee only) consumption to 1 to 2 per days.