How to increase supply?

Baby is 5 weeks old. Stopped breastfeeding and pumping early on due to medical reasons. Those reasons are fixed but now supply is low. I'm pumping to try to measure supply and want to breastfeed when it gets back up. it's slowly going up by a few ml per day but it's basically one bottles worth from a whole day of pumping every 2-3 hours. I don't pump in the middle of the night because I'm already up all night taking care of baby 's medical stuff. I'm eating one bowl of oatmeal every day and drinking lots of water. Lactation consultant told me not to drink mothers milk/fenugreek. Is there anything else I can do? Am I kidding myself here and it's too late? I go back to work in 2 weeks and my son is coming with me so for at least 3 days a week pumping during the day will be hard because I have to use breaks to feed him bottle.