How to maintain your workout during a busy work period?

I have been working out for a few months now, 3-4 days a week, 1-2 hours per each workout day, there's basically three different workout days:

Day 1: chest, shoulder, tricep, Day 2: back bicep forearm, Day 3: abs and legs

But for the coming few months I will be really busy with work and I have to stay somewhere else, so I won't have the time to workout as hard anymore, plus I won't have my dumbbells with me.

Any ideas guys like on a home full body home workout that can at least help me to maintain what I have achieved so far? or else I feel like all my hard work for the past months will be gone to waste haha Thanks!

How to maintain your workout during a busy work period?
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