Do you have a physical store or local markets?
Times are tough so it might be time to look outside your "normal" customers. (I'm assuming you have been in business for a little while here) Not sure where you are so some of this may/may not apply.
How about a T-Shirt clearance? Mothers Day is coming up maybe some "World's best Mum" with roses on it or similar folded and tied with a ribbon as a "cheap" gift The beauty is with
DTG you are very flexible and don't even need to make up screens!
Is there a special event being advertised (circus visiting, school open day etc) You could contact the organisers and see about either supplying them or perhaps a stall (you may even be able to negotiate free stall in return for them getting a percentage off or quantity of tee's)
Perhaps approach a local kindy/school with a design to sell as a fundraiser? (Eg they do the advertising through newsletter etc compile the orders and place with you.. might be 2 weeks to get a result but on top of the others may get you through)
If you have a shop maybe it is time to advertise to come and see how it all works and get your "T-Shirt" design printed. Are you allowed to run a table out the front? If so maybe a clearance sale of some designs. (This is great because you will also likely find people are happy to talk to you "outside" the shop and you may find a niche people are looking for.
Do you have a local discount/clearance store? (Preferably a small store rather than a chain) You could try offering them a "one off" buy of x number of prints for a good price (preferably something you don't use anymore or something just for them so you don't hurt your "normal" customers, that can be very short sighted)
I agree with the contacting screen printers. I lost a job recently because I couldn't get a
DTG printer locally who was willing to discuss contract pricing without minimum orders (This was for a customer with over 20 childcare centre's) An interstate company got the job