Neighbourhood plans are stupidly expensive and of questionable value these days as the current government are determined to change the entire planning system. They are also a huge amount of work, require the parish to work with planning experts (unless the parish is very small) and require the commissioning of a variety of documents such as habitats assessments, etc. which can themselves be expensive. Multiple public consultations are required and the formula you must follow is prescriptive. If you don't follow the process set out, the independent external examiner will throw the draft plan back at you before you can get to referendum which of course you then have to pass. You also need the active support of your principal authority planning team. Just getting started is almost certainly going to require a good deal of education, training and research by who ever is leading on the project. You may have allocated a budget but, ignoring any questions about how or when that budget is spent, there are very many ducks to get in a row before any clear progress is seen.