Depends how tight to the wire you were before. If it’s a “drop the caviar” or “can’t afford bills”.
Can you look at any of your bills and see if you can get a lower rate? I recently “saved” £200 a year (same provider) for home insurance, £16.70 a month adds up. Reviewed all of our insurances and dropped it a bit (I decided insurance is needed but you can drop cover levels to drop cost).
Energy saving - switch off / use less. Results in penny savings daily, difficult in a gadget age but kids (husband) can leave a lot of things on.
Food savings. Shop around a bit, use loyalty points and bonus point periods - Tesco’s Christmas clubs handy and nectar is useful. Online ordering can mean you’re more savy rather than impulse buying. Go to own brands rather than well know. Aldi / Lidl are cheaper for certain things compared to Asda. Frozen meat and veg is often a lot cheaper.
Bulk out meals with cheaper items - pulses, grains, rice, veg. Fruit is often relatively expensive so stick to offers or frozen fruits.
Check the entitled to website incase you’re missing any help you can get.
Is there any chance you can gain hours back?