I think that you will probably be fine training in the morning. I would definitely prefer training at like 9 or 10 AM to 9 or 10 PM. At first, working out and then walking around/working will probably make you very tired, but I bet your body will adjust quickly and you will be fine after a couple weeks. If you feel like you need to, you could take your workouts a little easier at first to "feel out" the schedule change, but honestly I would just keep training as normal, be prepared that it might be a tiring couple weeks, but if you just keep going your work capacity will increase and you'll be good. The human body is an amazing thing haha, don't doubt it's ability to handle a workload.