I have read good things about Bug Molds. However being they’re located in Ukraine…not sure they are taking new orders but you could check. Believe it or not, a custom mold I had ordered in January just landed in NY yesterday. Fingers crossed the USPS doesn’t misplace another one of my packages. You might be hard pressed getting a mold cut right now due to high demand and supply chain issues. I know the price of aluminum just went up the first of the year too. You might contact cncmolds.com or fatguysfishing.com to see if they are doing custom molds at present.
For quicker results have you tried making your own two piece injection mold from silicone? Being that you have a wood master a bit of wood carving on a 5/8”-3/4” dowel tacked to your master, a mold box or LEGOS, some clay and silicone could get you a useable injection mold. You just can’t shoot with a lot of pressure.