Because of adding an addition to our home, I am forced to relocate my amaryllis. I realize this is the wrong time of year to do this, so I am looking for any suggestions as to what would be my best option. Some of the amaryllis have already begun to bloom. Also, I will not be able to immediately replant the bulbs in my desired location until addition is completed which will be 2-3 months. There are probably about 75 bulbs. Thank you for any suggestions!

Since you really don't have much choice due to the construction. I guess I would either dig another spot in my garden and put them in, ir attempt the same thing with several large containers. I could even see large bags of potting soil being split length wise and the bulbs placed in the bags.
I have found amaryllis are pretty sturdy, good luck!