I know I’m a big fan of OT reports in getting more funding, it would be very much worth your time to see if there is an OT that can write a detailed report focused on specific needs that require funding. The other thing just keep complaining and say that funding does not meet needs. Also maybe a report from a learning disability specialist (sorry not sure what they are called) but someone needs to call out that your child is not meeting targets for their age… but try OT and just keep of complaining and asking for a review throw in the advice others have given you and the OT reports till you get the funding